398148722 has 16 divisors (see below), whose sum is σ = 629620992. Its totient is φ = 188453760.

The previous prime is 398148701. The next prime is 398148727. The reversal of 398148722 is 227841893.

It is not an unprimeable number, because it can be changed into a prime (398148727) 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, 40154 + ... + 49077.

It is an arithmetic number, because the mean of its divisors is an integer number (39351312).

Almost surely, 2^398148722 is an apocalyptic number.

398148722 is a deficient number, since it is larger than the sum of its proper divisors (231472270).

398148722 is a wasteful number, since it uses less digits than its factorization.

398148722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89353.

The product of its digits is 193536, while the sum is 44.

The square root of 398148722 is about 19953.6643752470. The cubic root of 398148722 is about 735.6678471799.

The spelling of 398148722 in words is "three hundred ninety-eight million, one hundred forty-eight thousand, seven hundred twenty-two".