77489049 has 32 divisors (see below), whose sum is σ = 120153600. Its totient is φ = 43925760.

The previous prime is 77489039. The next prime is 77489101. The reversal of 77489049 is 94098477.

It is a happy number.

It is not a de Polignac number, because 77489049 - 2⁴ = 77489033 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 77488989 and 77489007.

It is not an unprimeable number, because it can be changed into a prime (77489039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51297 + ... + 52785.

It is an arithmetic number, because the mean of its divisors is an integer number (3754800).

Almost surely, 2^77489049 is an apocalyptic number.

It is an amenable number.

77489049 is a deficient number, since it is larger than the sum of its proper divisors (42664551).

77489049 is a wasteful number, since it uses less digits than its factorization.

77489049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 77489049 is about 8802.7864338515. The cubic root of 77489049 is about 426.3308666300.

The spelling of 77489049 in words is "seventy-seven million, four hundred eighty-nine thousand, forty-nine".