1398920590 has 16 divisors (see below), whose sum is σ = 2533138272. Its totient is φ = 556216864.

The previous prime is 1398920431. The next prime is 1398920617. The reversal of 1398920590 is 950298931.

It is a self number, because there is not a number n which added to its sum of digits gives 1398920590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417169 + ... + 420508.

It is an arithmetic number, because the mean of its divisors is an integer number (158321142).

Almost surely, 2^1398920590 is an apocalyptic number.

1398920590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398920590 is a deficient number, since it is larger than the sum of its proper divisors (1134217682).

1398920590 is a wasteful number, since it uses less digits than its factorization.

1398920590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837851.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 1398920590 is about 37402.1468635157. The cubic root of 1398920590 is about 1118.4013624384.

The spelling of 1398920590 in words is "one billion, three hundred ninety-eight million, nine hundred twenty thousand, five hundred ninety".