79749057 has 8 divisors (see below), whose sum is σ = 112586976. Its totient is φ = 50038592.

The previous prime is 79749053. The next prime is 79749077. The reversal of 79749057 is 75094797.

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

It is a cyclic number.

It is not a de Polignac number, because 79749057 - 2² = 79749053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79748997 and 79749015.

It is not an unprimeable number, because it can be changed into a prime (79749053) 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 in 7 ways as a sum of consecutive naturals, for example, 781803 + ... + 781904.

It is an arithmetic number, because the mean of its divisors is an integer number (14073372).

Almost surely, 2^79749057 is an apocalyptic number.

It is an amenable number.

79749057 is a deficient number, since it is larger than the sum of its proper divisors (32837919).

79749057 is a wasteful number, since it uses less digits than its factorization.

79749057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563727.

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 79749057 is about 8930.2327517260. The cubic root of 79749057 is about 430.4359325207.

The spelling of 79749057 in words is "seventy-nine million, seven hundred forty-nine thousand, fifty-seven".