399277346 has 8 divisors (see below), whose sum is σ = 644986524. Its totient is φ = 184281840.

The previous prime is 399277327. The next prime is 399277349. The reversal of 399277346 is 643772993.

It can be written as a sum of positive squares in 2 ways, for example, as 394459321 + 4818025 = 19861^2 + 2195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 399277294 and 399277303.

It is not an unprimeable number, because it can be changed into a prime (399277349) 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, 7678385 + ... + 7678436.

Almost surely, 2^399277346 is an apocalyptic number.

399277346 is a deficient number, since it is larger than the sum of its proper divisors (245709178).

399277346 is a wasteful number, since it uses less digits than its factorization.

399277346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15356836.

The product of its digits is 1714608, while the sum is 50.

The square root of 399277346 is about 19981.9254827957. The cubic root of 399277346 is about 736.3623189004.

The spelling of 399277346 in words is "three hundred ninety-nine million, two hundred seventy-seven thousand, three hundred forty-six".