399024885 has 24 divisors (see below), whose sum is σ = 742676256. Its totient is φ = 182411040.

The previous prime is 399024859. The next prime is 399024889. The reversal of 399024885 is 588420993.

It is not a de Polignac number, because 399024885 - 2¹⁰ = 399023861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399024889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270711 + ... + 272180.

It is an arithmetic number, because the mean of its divisors is an integer number (30944844).

Almost surely, 2^399024885 is an apocalyptic number.

399024885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

399024885 is a deficient number, since it is larger than the sum of its proper divisors (343651371).

399024885 is a wasteful number, since it uses less digits than its factorization.

399024885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542913 (or 542906 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 399024885 is about 19975.6072498435. The cubic root of 399024885 is about 736.2070868169.

The spelling of 399024885 in words is "three hundred ninety-nine million, twenty-four thousand, eight hundred eighty-five".