399302900 has 18 divisors (see below), whose sum is σ = 866487510. Its totient is φ = 159721120.

The previous prime is 399302887. The next prime is 399302933. The reversal of 399302900 is 9203993.

It can be written as a sum of positive squares in 3 ways, for example, as 40806544 + 358496356 = 6388^2 + 18934^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1996415 + ... + 1996614.

It is an arithmetic number, because the mean of its divisors is an integer number (48138195).

Almost surely, 2^399302900 is an apocalyptic number.

It is an amenable number.

399302900 is an abundant number, since it is smaller than the sum of its proper divisors (467184610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399302900 is a wasteful number, since it uses less digits than its factorization.

399302900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993043 (or 3993036 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 399302900 is about 19982.5649004326. The cubic root of 399302900 is about 736.3780277817.

The spelling of 399302900 in words is "three hundred ninety-nine million, three hundred two thousand, nine hundred".