79401479 has 2 divisors, whose sum is σ = 79401480. Its totient is φ = 79401478.

The previous prime is 79401467. The next prime is 79401481. The reversal of 79401479 is 97410497.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79401479 is a prime.

Together with 79401481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79401409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39700739 + 39700740.

It is an arithmetic number, because the mean of its divisors is an integer number (39700740).

Almost surely, 2^79401479 is an apocalyptic number.

79401479 is a deficient number, since it is larger than the sum of its proper divisors (1).

79401479 is an equidigital number, since it uses as much as digits as its factorization.

79401479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 79401479 is about 8910.7507540050. The cubic root of 79401479 is about 429.8096850250.

The spelling of 79401479 in words is "seventy-nine million, four hundred one thousand, four hundred seventy-nine".