77477049 has 24 divisors (see below), whose sum is σ = 121185792. Its totient is φ = 47414880.

The previous prime is 77477033. The next prime is 77477053. The reversal of 77477049 is 94077477.

It is not a de Polignac number, because 77477049 - 2⁴ = 77477033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77476995 and 77477013.

It is not an unprimeable number, because it can be changed into a prime (77477549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20614 + ... + 24080.

It is an arithmetic number, because the mean of its divisors is an integer number (5049408).

Almost surely, 2^77477049 is an apocalyptic number.

It is an amenable number.

77477049 is a deficient number, since it is larger than the sum of its proper divisors (43708743).

77477049 is a wasteful number, since it uses less digits than its factorization.

77477049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677 (or 3674 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 77477049 is about 8802.1048051020. The cubic root of 77477049 is about 426.3088582104.

The spelling of 77477049 in words is "seventy-seven million, four hundred seventy-seven thousand, forty-nine".