79840437 has 8 divisors (see below), whose sum is σ = 106701504. Its totient is φ = 53103168.

The previous prime is 79840427. The next prime is 79840441. The reversal of 79840437 is 73404897.

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

It is not a de Polignac number, because 79840437 - 2⁴ = 79840421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79840427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29433 + ... + 32030.

It is an arithmetic number, because the mean of its divisors is an integer number (13337688).

Almost surely, 2^79840437 is an apocalyptic number.

It is an amenable number.

79840437 is a deficient number, since it is larger than the sum of its proper divisors (26861067).

79840437 is a wasteful number, since it uses less digits than its factorization.

79840437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61899.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 79840437 is about 8935.3476149504. The cubic root of 79840437 is about 430.6002739490.

The spelling of 79840437 in words is "seventy-nine million, eight hundred forty thousand, four hundred thirty-seven".