77488049 has 4 divisors (see below), whose sum is σ = 77600880. Its totient is φ = 77375220.

The previous prime is 77488043. The next prime is 77488069. The reversal of 77488049 is 94088477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77488049 - 2⁸ = 77487793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77487994 and 77488012.

It is not an unprimeable number, because it can be changed into a prime (77488043) 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, 55379 + ... + 56760.

It is an arithmetic number, because the mean of its divisors is an integer number (19400220).

Almost surely, 2^77488049 is an apocalyptic number.

It is an amenable number.

77488049 is a deficient number, since it is larger than the sum of its proper divisors (112831).

77488049 is a wasteful number, since it uses less digits than its factorization.

77488049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112830.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 77488049 is about 8802.7296334717. The cubic root of 77488049 is about 426.3290326818.

The spelling of 77488049 in words is "seventy-seven million, four hundred eighty-eight thousand, forty-nine".