399070933 has 4 divisors (see below), whose sum is σ = 402117408. Its totient is φ = 396024460.

The previous prime is 399070883. The next prime is 399070951. The reversal of 399070933 is 339070993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399070933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399070933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399070963) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1523041 + ... + 1523302.

It is an arithmetic number, because the mean of its divisors is an integer number (100529352).

Almost surely, 2^399070933 is an apocalyptic number.

It is an amenable number.

399070933 is a deficient number, since it is larger than the sum of its proper divisors (3046475).

399070933 is a wasteful number, since it uses less digits than its factorization.

399070933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046474.

The product of its (nonzero) digits is 137781, while the sum is 43.

The square root of 399070933 is about 19976.7598223536. The cubic root of 399070933 is about 736.2354054851.

The spelling of 399070933 in words is "three hundred ninety-nine million, seventy thousand, nine hundred thirty-three".