399047482 has 36 divisors (see below), whose sum is σ = 644509710. Its totient is φ = 185078880.

The previous prime is 399047471. The next prime is 399047491. The reversal of 399047482 is 284740993.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 122124601 + 276922881 = 11051^2 + 16641^2 .

It is a super-3 number, since 3×399047482³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6541732 + ... + 6541792.

Almost surely, 2^399047482 is an apocalyptic number.

399047482 is a deficient number, since it is larger than the sum of its proper divisors (245462228).

399047482 is an equidigital number, since it uses as much as digits as its factorization.

399047482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 399047482 is about 19976.1728566810. The cubic root of 399047482 is about 736.2209838261.

The spelling of 399047482 in words is "three hundred ninety-nine million, forty-seven thousand, four hundred eighty-two".