399536073 has 12 divisors (see below), whose sum is σ = 582712000. Its totient is φ = 263770776.

The previous prime is 399536069. The next prime is 399536083. The reversal of 399536073 is 370635993.

399536073 is a `hidden beast` number, since 39 + 9 + 5 + 3 + 607 + 3 = 666.

It is not a de Polignac number, because 399536073 - 2² = 399536069 is a prime.

It is a super-2 number, since 2×399536073² = 319258147256522658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399536003) 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 in 11 ways as a sum of consecutive naturals, for example, 214573 + ... + 216426.

Almost surely, 2^399536073 is an apocalyptic number.

It is an amenable number.

399536073 is a deficient number, since it is larger than the sum of its proper divisors (183175927).

399536073 is a wasteful number, since it uses less digits than its factorization.

399536073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431108 (or 431105 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 45.

The square root of 399536073 is about 19988.3984601068. The cubic root of 399536073 is about 736.5213359175.

The spelling of 399536073 in words is "three hundred ninety-nine million, five hundred thirty-six thousand, seventy-three".