79937409449 has 8 divisors (see below), whose sum is σ = 80066394408. Its totient is φ = 79808509440.

The previous prime is 79937409407. The next prime is 79937409493. The reversal of 79937409449 is 94490473997.

It can be written as a sum of positive squares in 4 ways, for example, as 15708110224 + 64229299225 = 125332^2 + 253435^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79937409449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79937409649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2017469 + ... + 2056709.

It is an arithmetic number, because the mean of its divisors is an integer number (10008299301).

Almost surely, 2^79937409449 is an apocalyptic number.

It is an amenable number.

79937409449 is a deficient number, since it is larger than the sum of its proper divisors (128984959).

79937409449 is a wasteful number, since it uses less digits than its factorization.

79937409449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42475.

The product of its (nonzero) digits is 61725888, while the sum is 65.

The spelling of 79937409449 in words is "seventy-nine billion, nine hundred thirty-seven million, four hundred nine thousand, four hundred forty-nine".