399296372 has 6 divisors (see below), whose sum is σ = 698768658. Its totient is φ = 199648184.

The previous prime is 399296371. The next prime is 399296377. The reversal of 399296372 is 273692993.

It can be written as a sum of positive squares in only one way, i.e., 382437136 + 16859236 = 19556^2 + 4106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 399296372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399296371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49912043 + ... + 49912050.

It is an arithmetic number, because the mean of its divisors is an integer number (116461443).

Almost surely, 2^399296372 is an apocalyptic number.

It is an amenable number.

399296372 is a deficient number, since it is larger than the sum of its proper divisors (299472286).

399296372 is a wasteful number, since it uses less digits than its factorization.

399296372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99824097 (or 99824095 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 50.

The square root of 399296372 is about 19982.4015573704. The cubic root of 399296372 is about 736.3740148699.

The spelling of 399296372 in words is "three hundred ninety-nine million, two hundred ninety-six thousand, three hundred seventy-two".