1974979 has 4 divisors (see below), whose sum is σ = 2038720. Its totient is φ = 1911240.

The previous prime is 1974967. The next prime is 1974983. The reversal of 1974979 is 9794791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9794791 = 31 ⋅315961.

It is a cyclic number.

It is not a de Polignac number, because 1974979 - 2⁷ = 1974851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1974919) 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, 31824 + ... + 31885.

It is an arithmetic number, because the mean of its divisors is an integer number (509680).

2^1974979 is an apocalyptic number.

1974979 is a deficient number, since it is larger than the sum of its proper divisors (63741).

1974979 is an equidigital number, since it uses as much as digits as its factorization.

1974979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63740.

The product of its digits is 142884, while the sum is 46.

The square root of 1974979 is about 1405.3394607710. The cubic root of 1974979 is about 125.4644905172.

It can be divided in two parts, 197497 and 9, that added together give a triangular number (197506 = T₆₂₈).

The spelling of 1974979 in words is "one million, nine hundred seventy-four thousand, nine hundred seventy-nine".