399494354 has 12 divisors (see below), whose sum is σ = 697077054. Its totient is φ = 171211824.

The previous prime is 399494317. The next prime is 399494357. The reversal of 399494354 is 453494993.

It can be written as a sum of positive squares in only one way, i.e., 394936129 + 4558225 = 19873^2 + 2135^2 .

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2038139 + ... + 2038334.

Almost surely, 2^399494354 is an apocalyptic number.

399494354 is a deficient number, since it is larger than the sum of its proper divisors (297582700).

399494354 is a wasteful number, since it uses less digits than its factorization.

399494354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076489 (or 4076482 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 50.

The square root of 399494354 is about 19987.3548525061. The cubic root of 399494354 is about 736.4956995146.

The spelling of 399494354 in words is "three hundred ninety-nine million, four hundred ninety-four thousand, three hundred fifty-four".