399742302 has 16 divisors (see below), whose sum is σ = 821092752. Its totient is φ = 129646080.

The previous prime is 399742289. The next prime is 399742307. The reversal of 399742302 is 203247993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399742307) 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, 900099 + ... + 900542.

It is an arithmetic number, because the mean of its divisors is an integer number (51318297).

Almost surely, 2^399742302 is an apocalyptic number.

399742302 is an abundant number, since it is smaller than the sum of its proper divisors (421350450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399742302 is a wasteful number, since it uses less digits than its factorization.

399742302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800683.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 399742302 is about 19993.5565120366. The cubic root of 399742302 is about 736.6480378119.

The spelling of 399742302 in words is "three hundred ninety-nine million, seven hundred forty-two thousand, three hundred two".