344399977 has 2 divisors, whose sum is σ = 344399978. Its totient is φ = 344399976.

The previous prime is 344399927. The next prime is 344400037. The reversal of 344399977 is 779993443.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297942121 + 46457856 = 17261^2 + 6816^2 .

It is a cyclic number.

It is not a de Polignac number, because 344399977 - 2¹⁵ = 344367209 is a prime.

It is a super-2 number, since 2×344399977² = 237222688315201058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (344399927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172199988 + 172199989.

It is an arithmetic number, because the mean of its divisors is an integer number (172199989).

Almost surely, 2^344399977 is an apocalyptic number.

It is an amenable number.

344399977 is a deficient number, since it is larger than the sum of its proper divisors (1).

344399977 is an equidigital number, since it uses as much as digits as its factorization.

344399977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 55.

The square root of 344399977 is about 18558.0165157810. The cubic root of 344399977 is about 700.9510725224.

The spelling of 344399977 in words is "three hundred forty-four million, three hundred ninety-nine thousand, nine hundred seventy-seven".