399730794 has 16 divisors (see below), whose sum is σ = 802781760. Its totient is φ = 132690240.

The previous prime is 399730789. The next prime is 399730801. The reversal of 399730794 is 497037993.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136774 + ... + 139665.

It is an arithmetic number, because the mean of its divisors is an integer number (50173860).

Almost surely, 2^399730794 is an apocalyptic number.

399730794 is an abundant number, since it is smaller than the sum of its proper divisors (403050966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399730794 is a wasteful number, since it uses less digits than its factorization.

399730794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276685.

The product of its (nonzero) digits is 1285956, while the sum is 51.

The square root of 399730794 is about 19993.2687172458. The cubic root of 399730794 is about 736.6409687352.

The spelling of 399730794 in words is "three hundred ninety-nine million, seven hundred thirty thousand, seven hundred ninety-four".