1398522398 has 32 divisors (see below), whose sum is σ = 2717783040. Its totient is φ = 524141280.

The previous prime is 1398522373. The next prime is 1398522401. The reversal of 1398522398 is 8932258931.

It is a congruent number.

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, 198758 + ... + 205673.

It is an arithmetic number, because the mean of its divisors is an integer number (84930720).

Almost surely, 2^1398522398 is an apocalyptic number.

1398522398 is a deficient number, since it is larger than the sum of its proper divisors (1319260642).

1398522398 is a wasteful number, since it uses less digits than its factorization.

1398522398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404472.

The product of its digits is 933120, while the sum is 50.

The square root of 1398522398 is about 37396.8233677675. The cubic root of 1398522398 is about 1118.2952375830.

The spelling of 1398522398 in words is "one billion, three hundred ninety-eight million, five hundred twenty-two thousand, three hundred ninety-eight".