77484869 has 16 divisors (see below), whose sum is σ = 101690880. Its totient is φ = 57198960.

The previous prime is 77484863. The next prime is 77484881. The reversal of 77484869 is 96848477.

It is not a de Polignac number, because 77484869 - 2⁴ = 77484853 is a prime.

It is a super-2 number, since 2×77484869² = 12007809847894322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77484869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77484863) 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, 25019 + ... + 27944.

It is an arithmetic number, because the mean of its divisors is an integer number (6355680).

Almost surely, 2^77484869 is an apocalyptic number.

It is an amenable number.

77484869 is a deficient number, since it is larger than the sum of its proper divisors (24206011).

77484869 is a wasteful number, since it uses less digits than its factorization.

77484869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53000.

The product of its digits is 2709504, while the sum is 53.

The square root of 77484869 is about 8802.5490058278. The cubic root of 77484869 is about 426.3232006217.

The spelling of 77484869 in words is "seventy-seven million, four hundred eighty-four thousand, eight hundred sixty-nine".