1598979 has 4 divisors (see below), whose sum is σ = 2131976. Its totient is φ = 1065984.

The previous prime is 1598963. The next prime is 1598999. The reversal of 1598979 is 9798951.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1598979 - 2⁴ = 1598963 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1598999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266494 + ... + 266499.

It is an arithmetic number, because the mean of its divisors is an integer number (532994).

2^1598979 is an apocalyptic number.

1598979 is a deficient number, since it is larger than the sum of its proper divisors (532997).

1598979 is an equidigital number, since it uses as much as digits as its factorization.

1598979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532996.

The product of its digits is 204120, while the sum is 48.

The square root of 1598979 is about 1264.5074139759. The cubic root of 1598979 is about 116.9358257172.

The spelling of 1598979 in words is "one million, five hundred ninety-eight thousand, nine hundred seventy-nine".