2979917 has 2 divisors, whose sum is σ = 2979918. Its totient is φ = 2979916.

The previous prime is 2979901. The next prime is 2979919. The reversal of 2979917 is 7199792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2979076 + 841 = 1726^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979917 - 2⁴ = 2979901 is a prime.

Together with 2979919, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2979919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489958 + 1489959.

It is an arithmetic number, because the mean of its divisors is an integer number (1489959).

2^2979917 is an apocalyptic number.

It is an amenable number.

2979917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979917 is an equidigital number, since it uses as much as digits as its factorization.

2979917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 44.

The square root of 2979917 is about 1726.2436096913. The cubic root of 2979917 is about 143.9024062231.

The spelling of 2979917 in words is "two million, nine hundred seventy-nine thousand, nine hundred seventeen".