399020262 has 16 divisors (see below), whose sum is σ = 798675120. Its totient is φ = 132900992.

The previous prime is 399020239. The next prime is 399020287. The reversal of 399020262 is 262020993.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18063 + ... + 33530.

It is an arithmetic number, because the mean of its divisors is an integer number (49917195).

Almost surely, 2^399020262 is an apocalyptic number.

399020262 is an abundant number, since it is smaller than the sum of its proper divisors (399654858).

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

399020262 is a wasteful number, since it uses less digits than its factorization.

399020262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52887.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 399020262 is about 19975.4915333766. The cubic root of 399020262 is about 736.2042436371.

The spelling of 399020262 in words is "three hundred ninety-nine million, twenty thousand, two hundred sixty-two".