399907435 has 8 divisors (see below), whose sum is σ = 480152016. Its totient is φ = 319750560.

The previous prime is 399907397. The next prime is 399907441. The reversal of 399907435 is 534709993.

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

It is not a de Polignac number, because 399907435 - 2¹⁵ = 399874667 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 11436 + ... + 30505.

It is an arithmetic number, because the mean of its divisors is an integer number (60019002).

Almost surely, 2^399907435 is an apocalyptic number.

399907435 is a deficient number, since it is larger than the sum of its proper divisors (80244581).

399907435 is a wasteful number, since it uses less digits than its factorization.

399907435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43853.

The product of its (nonzero) digits is 918540, while the sum is 49.

The square root of 399907435 is about 19997.6857411051. The cubic root of 399907435 is about 736.7494599474.

The spelling of 399907435 in words is "three hundred ninety-nine million, nine hundred seven thousand, four hundred thirty-five".