77109459 has 16 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 43884000.

The previous prime is 77109457. The next prime is 77109499. The reversal of 77109459 is 95490177.

It is a happy number.

It is not a de Polignac number, because 77109459 - 2¹ = 77109457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77109459.

It is not an unprimeable number, because it can be changed into a prime (77109457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2044 + ... + 12585.

It is an arithmetic number, because the mean of its divisors is an integer number (7373520).

Almost surely, 2^77109459 is an apocalyptic number.

77109459 is a deficient number, since it is larger than the sum of its proper divisors (40866861).

77109459 is a wasteful number, since it uses less digits than its factorization.

77109459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14890.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 77109459 is about 8781.1991777889. The cubic root of 77109459 is about 425.6335814132.

The spelling of 77109459 in words is "seventy-seven million, one hundred nine thousand, four hundred fifty-nine".