398577946 has 8 divisors (see below), whose sum is σ = 643856724. Its totient is φ = 183959040.

The previous prime is 398577923. The next prime is 398577983. The reversal of 398577946 is 649775893.

It can be written as a sum of positive squares in 2 ways, for example, as 366531025 + 32046921 = 19145^2 + 5661^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7664935 + ... + 7664986.

Almost surely, 2^398577946 is an apocalyptic number.

398577946 is a deficient number, since it is larger than the sum of its proper divisors (245278778).

398577946 is a wasteful number, since it uses less digits than its factorization.

398577946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15329936.

The product of its digits is 11430720, while the sum is 58.

The square root of 398577946 is about 19964.4169962461. The cubic root of 398577946 is about 735.9321143377.

The spelling of 398577946 in words is "three hundred ninety-eight million, five hundred seventy-seven thousand, nine hundred forty-six".