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344742389 = 1272714507
BaseRepresentation
bin10100100011000…
…101100111110101
3220000200201122122
4110203011213311
51201223224024
654113005325
711354155565
oct2443054765
9800621578
10344742389
11167664072
1297553845
13565650a4
1433adcda5
15203ead5e
hex148c59f5

344742389 has 4 divisors (see below), whose sum is σ = 347457024. Its totient is φ = 342027756.

The previous prime is 344742367. The next prime is 344742397. The reversal of 344742389 is 983247443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 344742389 - 228 = 76306933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344742319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357127 + ... + 1357380.

It is an arithmetic number, because the mean of its divisors is an integer number (86864256).

Almost surely, 2344742389 is an apocalyptic number.

It is an amenable number.

344742389 is a deficient number, since it is larger than the sum of its proper divisors (2714635).

344742389 is a wasteful number, since it uses less digits than its factorization.

344742389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714634.

The product of its digits is 580608, while the sum is 44.

The square root of 344742389 is about 18567.2396709904. The cubic root of 344742389 is about 701.1832972376.

It can be divided in two parts, 34474 and 2389, that added together give a palindrome (36863).

The spelling of 344742389 in words is "three hundred forty-four million, seven hundred forty-two thousand, three hundred eighty-nine".

Divisors: 1 127 2714507 344742389