Search a number
-
+
87958349 = 432045543
BaseRepresentation
bin1010011111000…
…10001101001101
320010111202011122
411033202031031
5140004131344
612421130325
72115430223
oct517421515
9203452148
1087958349
1145717456
12255599a5
13152b887b
14b978b13
157ac6aee
hex53e234d

87958349 has 4 divisors (see below), whose sum is σ = 90003936. Its totient is φ = 85912764.

The previous prime is 87958319. The next prime is 87958369. The reversal of 87958349 is 94385978.

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 87958349 - 216 = 87892813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87958349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87958309) 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, 1022729 + ... + 1022814.

It is an arithmetic number, because the mean of its divisors is an integer number (22500984).

Almost surely, 287958349 is an apocalyptic number.

It is an amenable number.

87958349 is a deficient number, since it is larger than the sum of its proper divisors (2045587).

87958349 is a wasteful number, since it uses less digits than its factorization.

87958349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045586.

The product of its digits is 2177280, while the sum is 53.

The square root of 87958349 is about 9378.6112511395. The cubic root of 87958349 is about 444.7258320435.

The spelling of 87958349 in words is "eighty-seven million, nine hundred fifty-eight thousand, three hundred forty-nine".

Divisors: 1 43 2045543 87958349