1598399397 has 24 divisors (see below), whose sum is σ = 2699995584. Its totient is φ = 892128384.

The previous prime is 1598399393. The next prime is 1598399417. The reversal of 1598399397 is 7939938951.

1598399397 is a `hidden beast` number, since 1 + 598 + 3 + 9 + 9 + 39 + 7 = 666.

It is not a de Polignac number, because 1598399397 - 2² = 1598399393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1598399393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292308 + ... + 297725.

It is an arithmetic number, because the mean of its divisors is an integer number (112499816).

Almost surely, 2^1598399397 is an apocalyptic number.

It is an amenable number.

1598399397 is a deficient number, since it is larger than the sum of its proper divisors (1101596187).

1598399397 is a wasteful number, since it uses less digits than its factorization.

1598399397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590089 (or 590086 counting only the distinct ones).

The product of its digits is 16533720, while the sum is 63.

The square root of 1598399397 is about 39979.9874562261. The cubic root of 1598399397 is about 1169.2169491948.

The spelling of 1598399397 in words is "one billion, five hundred ninety-eight million, three hundred ninety-nine thousand, three hundred ninety-seven".