79901742 has 8 divisors (see below), whose sum is σ = 159803496. Its totient is φ = 26633912.

The previous prime is 79901741. The next prime is 79901761. The reversal of 79901742 is 24710997.

It is a sphenic number, since it is the product of 3 distinct primes.

79901742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 79901742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79901741) 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, 6658473 + ... + 6658484.

It is an arithmetic number, because the mean of its divisors is an integer number (19975437).

Almost surely, 2^79901742 is an apocalyptic number.

79901742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79901742 is a wasteful number, since it uses less digits than its factorization.

79901742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13316962.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 79901742 is about 8938.7774331840. Note that the first 3 decimals coincide. The cubic root of 79901742 is about 430.7104570307.

The spelling of 79901742 in words is "seventy-nine million, nine hundred one thousand, seven hundred forty-two".