77421484 has 12 divisors (see below), whose sum is σ = 154843024. Its totient is φ = 33180624.

The previous prime is 77421481. The next prime is 77421493. The reversal of 77421484 is 48412477.

77421484 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77421481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382499 + ... + 1382554.

Almost surely, 2^77421484 is an apocalyptic number.

It is an amenable number.

77421484 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77421484 is a wasteful number, since it uses less digits than its factorization.

77421484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765064 (or 2765062 counting only the distinct ones).

The product of its digits is 50176, while the sum is 37.

The square root of 77421484 is about 8798.9478916516. The cubic root of 77421484 is about 426.2069204233.

The spelling of 77421484 in words is "seventy-seven million, four hundred twenty-one thousand, four hundred eighty-four".