399494355 has 32 divisors (see below), whose sum is σ = 696681216. Its totient is φ = 194296704.

The previous prime is 399494317. The next prime is 399494357. The reversal of 399494355 is 553494993.

It is not a de Polignac number, because 399494355 - 2¹¹ = 399492307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399494298 and 399494307.

It is not an unprimeable number, because it can be changed into a prime (399494357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3844 + ... + 28526.

It is an arithmetic number, because the mean of its divisors is an integer number (21771288).

Almost surely, 2^399494355 is an apocalyptic number.

399494355 is a deficient number, since it is larger than the sum of its proper divisors (297186861).

399494355 is a wasteful number, since it uses less digits than its factorization.

399494355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24787.

The product of its digits is 2624400, while the sum is 51.

The square root of 399494355 is about 19987.3548775219. The cubic root of 399494355 is about 736.4957001292.

The spelling of 399494355 in words is "three hundred ninety-nine million, four hundred ninety-four thousand, three hundred fifty-five".