2979923 has 4 divisors (see below), whose sum is σ = 3006408. Its totient is φ = 2953440.

The previous prime is 2979919. The next prime is 2979931. The reversal of 2979923 is 3299792.

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

It is a cyclic number.

It is not a de Polignac number, because 2979923 - 2² = 2979919 is a prime.

It is a d-powerful number, because it can be written as 2³ + 9 + 7⁷ + 9² + 9² + 2²¹ + 3¹⁰ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979023) 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, 13073 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (751602).

2^2979923 is an apocalyptic number.

2979923 is a deficient number, since it is larger than the sum of its proper divisors (26485).

2979923 is a wasteful number, since it uses less digits than its factorization.

2979923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26484.

The product of its digits is 61236, while the sum is 41.

The square root of 2979923 is about 1726.2453475680. The cubic root of 2979923 is about 143.9025028045.

The spelling of 2979923 in words is "two million, nine hundred seventy-nine thousand, nine hundred twenty-three".