77849331 has 8 divisors (see below), whose sum is σ = 118627584. Its totient is φ = 44485320.

The previous prime is 77849297. The next prime is 77849347. The reversal of 77849331 is 13394877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77849331 - 2⁶ = 77849267 is a prime.

It is a super-2 number, since 2×77849331² = 12121036674295122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77849351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853535 + ... + 1853576.

It is an arithmetic number, because the mean of its divisors is an integer number (14828448).

Almost surely, 2^77849331 is an apocalyptic number.

77849331 is a deficient number, since it is larger than the sum of its proper divisors (40778253).

77849331 is a wasteful number, since it uses less digits than its factorization.

77849331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707121.

The product of its digits is 127008, while the sum is 42.

The square root of 77849331 is about 8823.2267906928. The cubic root of 77849331 is about 426.9905809212.

The spelling of 77849331 in words is "seventy-seven million, eight hundred forty-nine thousand, three hundred thirty-one".