399020883 has 4 divisors (see below), whose sum is σ = 532027848. Its totient is φ = 266013920.

The previous prime is 399020837. The next prime is 399020899. The reversal of 399020883 is 388020993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399020883 - 2⁶ = 399020819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399020803) 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, 66503478 + ... + 66503483.

It is an arithmetic number, because the mean of its divisors is an integer number (133006962).

Almost surely, 2^399020883 is an apocalyptic number.

399020883 is a deficient number, since it is larger than the sum of its proper divisors (133006965).

399020883 is a wasteful number, since it uses less digits than its factorization.

399020883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133006964.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 399020883 is about 19975.5070774186. The cubic root of 399020883 is about 736.2046255581.

The spelling of 399020883 in words is "three hundred ninety-nine million, twenty thousand, eight hundred eighty-three".