1398920589 has 48 divisors (see below), whose sum is σ = 2289530880. Its totient is φ = 815310720.

The previous prime is 1398920431. The next prime is 1398920617. The reversal of 1398920589 is 9850298931.

1398920589 is a `hidden beast` number, since 1 + 39 + 8 + 9 + 20 + 589 = 666.

It is not a de Polignac number, because 1398920589 - 2⁹ = 1398920077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398920189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 840372 + ... + 842034.

It is an arithmetic number, because the mean of its divisors is an integer number (47698560).

Almost surely, 2^1398920589 is an apocalyptic number.

It is an amenable number.

1398920589 is a deficient number, since it is larger than the sum of its proper divisors (890610291).

1398920589 is a wasteful number, since it uses less digits than its factorization.

1398920589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 1398920589 is about 37402.1468501475. The cubic root of 1398920589 is about 1118.4013621719.

The spelling of 1398920589 in words is "one billion, three hundred ninety-eight million, nine hundred twenty thousand, five hundred eighty-nine".