399974803 has 8 divisors (see below), whose sum is σ = 422948736. Its totient is φ = 377630400.

The previous prime is 399974801. The next prime is 399974821. The reversal of 399974803 is 308479993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399974803 - 2¹ = 399974801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399974801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156076 + ... + 158617.

It is an arithmetic number, because the mean of its divisors is an integer number (52868592).

Almost surely, 2^399974803 is an apocalyptic number.

399974803 is a deficient number, since it is larger than the sum of its proper divisors (22973933).

399974803 is a wasteful number, since it uses less digits than its factorization.

399974803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314765.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 399974803 is about 19999.3700650795. The cubic root of 399974803 is about 736.7908283129.

The spelling of 399974803 in words is "three hundred ninety-nine million, nine hundred seventy-four thousand, eight hundred three".