398747974 has 12 divisors (see below), whose sum is σ = 600067332. Its totient is φ = 198727340.

The previous prime is 398747963. The next prime is 398747977. The reversal of 398747974 is 479747893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398747977) 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, 481749 + ... + 482575.

It is an arithmetic number, because the mean of its divisors is an integer number (50005611).

Almost surely, 2^398747974 is an apocalyptic number.

398747974 is a deficient number, since it is larger than the sum of its proper divisors (201319358).

398747974 is an frugal number, since it uses more digits than its factorization.

398747974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 1320 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 58.

The square root of 398747974 is about 19968.6748183248. The cubic root of 398747974 is about 736.0367457138.

The spelling of 398747974 in words is "three hundred ninety-eight million, seven hundred forty-seven thousand, nine hundred seventy-four".