399054705 has 16 divisors (see below), whose sum is σ = 729700224. Its totient is φ = 182424960.

The previous prime is 399054697. The next prime is 399054757. The reversal of 399054705 is 507450993.

It is not a de Polignac number, because 399054705 - 2³ = 399054697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1900156 + ... + 1900365.

It is an arithmetic number, because the mean of its divisors is an integer number (45606264).

Almost surely, 2^399054705 is an apocalyptic number.

399054705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

399054705 is a deficient number, since it is larger than the sum of its proper divisors (330645519).

399054705 is a wasteful number, since it uses less digits than its factorization.

399054705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800536.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 399054705 is about 19976.3536462489. The cubic root of 399054705 is about 736.2254258139.

The spelling of 399054705 in words is "three hundred ninety-nine million, fifty-four thousand, seven hundred five".