399437092 has 6 divisors (see below), whose sum is σ = 699014918. Its totient is φ = 199718544.

The previous prime is 399437081. The next prime is 399437107. The reversal of 399437092 is 290734993.

It can be written as a sum of positive squares in only one way, i.e., 266864896 + 132572196 = 16336^2 + 11514^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49929633 + ... + 49929640.

Almost surely, 2^399437092 is an apocalyptic number.

It is an amenable number.

399437092 is a deficient number, since it is larger than the sum of its proper divisors (299577826).

399437092 is a wasteful number, since it uses less digits than its factorization.

399437092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99859277 (or 99859275 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 399437092 is about 19985.9223454911. The cubic root of 399437092 is about 736.4605090032.

The spelling of 399437092 in words is "three hundred ninety-nine million, four hundred thirty-seven thousand, ninety-two".