79021445 has 16 divisors (see below), whose sum is σ = 99290880. Its totient is φ = 60259584.

The previous prime is 79021421. The next prime is 79021447. The reversal of 79021445 is 54412097.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79021445 - 2¹² = 79017349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79021447) 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 15 ways as a sum of consecutive naturals, for example, 37736 + ... + 39774.

It is an arithmetic number, because the mean of its divisors is an integer number (6205680).

Almost surely, 2^79021445 is an apocalyptic number.

It is an amenable number.

79021445 is a deficient number, since it is larger than the sum of its proper divisors (20269435).

79021445 is a wasteful number, since it uses less digits than its factorization.

79021445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 79021445 is about 8889.4007109591. The cubic root of 79021445 is about 429.1228649592.

The spelling of 79021445 in words is "seventy-nine million, twenty-one thousand, four hundred forty-five".