399285801 has 16 divisors (see below), whose sum is σ = 597067200. Its totient is φ = 263700864.

The previous prime is 399285787. The next prime is 399285823. The reversal of 399285801 is 108582993.

It is a happy number.

It is not a de Polignac number, because 399285801 - 2¹⁴ = 399269417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (399285871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66216 + ... + 71993.

It is an arithmetic number, because the mean of its divisors is an integer number (37316700).

Almost surely, 2^399285801 is an apocalyptic number.

It is an amenable number.

399285801 is a deficient number, since it is larger than the sum of its proper divisors (197781399).

399285801 is a wasteful number, since it uses less digits than its factorization.

399285801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138325 (or 138319 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 399285801 is about 19982.1370478735. The cubic root of 399285801 is about 736.3675165402.

The spelling of 399285801 in words is "three hundred ninety-nine million, two hundred eighty-five thousand, eight hundred one".