344780377 has 4 divisors (see below), whose sum is σ = 346154256. Its totient is φ = 343406500.

The previous prime is 344780353. The next prime is 344780399. The reversal of 344780377 is 773087443.

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 344780377 - 2¹⁹ = 344256089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344780347) 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, 686563 + ... + 687064.

It is an arithmetic number, because the mean of its divisors is an integer number (86538564).

Almost surely, 2^344780377 is an apocalyptic number.

It is an amenable number.

344780377 is a deficient number, since it is larger than the sum of its proper divisors (1373879).

344780377 is a wasteful number, since it uses less digits than its factorization.

344780377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373878.

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 344780377 is about 18568.2626273973. The cubic root of 344780377 is about 701.2090513210.

The spelling of 344780377 in words is "three hundred forty-four million, seven hundred eighty thousand, three hundred seventy-seven".