345938977 has 4 divisors (see below), whose sum is σ = 346462996. Its totient is φ = 345414960.

The previous prime is 345938963. The next prime is 345938987. The reversal of 345938977 is 779839543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 779839543 = 7 ⋅111405649.

It can be written as a sum of positive squares in 2 ways, for example, as 217887121 + 128051856 = 14761^2 + 11316^2 .

It is a cyclic number.

It is not a de Polignac number, because 345938977 - 2²⁷ = 211721249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345938987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261018 + ... + 262339.

It is an arithmetic number, because the mean of its divisors is an integer number (86615749).

Almost surely, 2^345938977 is an apocalyptic number.

It is an amenable number.

345938977 is a deficient number, since it is larger than the sum of its proper divisors (524019).

345938977 is an equidigital number, since it uses as much as digits as its factorization.

345938977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524018.

The product of its digits is 5715360, while the sum is 55.

The square root of 345938977 is about 18599.4348570057. The cubic root of 345938977 is about 701.9936208001.

It can be divided in two parts, 3459 and 38977, that added together give a square (42436 = 206²).

The spelling of 345938977 in words is "three hundred forty-five million, nine hundred thirty-eight thousand, nine hundred seventy-seven".