399424762 has 16 divisors (see below), whose sum is σ = 682022592. Its totient is φ = 173662720.

The previous prime is 399424709. The next prime is 399424763. The reversal of 399424762 is 267424993.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (399424763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394183 + ... + 395194.

It is an arithmetic number, because the mean of its divisors is an integer number (42626412).

Almost surely, 2^399424762 is an apocalyptic number.

399424762 is a deficient number, since it is larger than the sum of its proper divisors (282597830).

399424762 is a wasteful number, since it uses less digits than its factorization.

399424762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789413.

The product of its digits is 653184, while the sum is 46.

The square root of 399424762 is about 19985.6138759859. The cubic root of 399424762 is about 736.4529311295.

The spelling of 399424762 in words is "three hundred ninety-nine million, four hundred twenty-four thousand, seven hundred sixty-two".