77444012 has 12 divisors (see below), whose sum is σ = 135699816. Its totient is φ = 38672640.

The previous prime is 77443999. The next prime is 77444023. The reversal of 77444012 is 21044477.

It is a super-2 number, since 2×77444012² = 11995149989312288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8693 + ... + 15180.

It is an arithmetic number, because the mean of its divisors is an integer number (11308318).

Almost surely, 2^77444012 is an apocalyptic number.

It is an amenable number.

77444012 is a deficient number, since it is larger than the sum of its proper divisors (58255804).

77444012 is a wasteful number, since it uses less digits than its factorization.

77444012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24688 (or 24686 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 77444012 is about 8800.2279515931. The cubic root of 77444012 is about 426.2482554545.

Adding to 77444012 its reverse (21044477), we get a palindrome (98488489).

The spelling of 77444012 in words is "seventy-seven million, four hundred forty-four thousand, twelve".