77899852 has 12 divisors (see below), whose sum is σ = 137599560. Its totient is φ = 38585696.

The previous prime is 77899849. The next prime is 77899853. The reversal of 77899852 is 25899877.

It is a super-3 number, since 3×77899852³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77899793 and 77899802.

It is not an unprimeable number, because it can be changed into a prime (77899853) 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, 90577 + ... + 91432.

It is an arithmetic number, because the mean of its divisors is an integer number (11466630).

Almost surely, 2^77899852 is an apocalyptic number.

It is an amenable number.

77899852 is a deficient number, since it is larger than the sum of its proper divisors (59699708).

77899852 is a wasteful number, since it uses less digits than its factorization.

77899852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182120 (or 182118 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 55.

The square root of 77899852 is about 8826.0892812162. The cubic root of 77899852 is about 427.0829273640.

The spelling of 77899852 in words is "seventy-seven million, eight hundred ninety-nine thousand, eight hundred fifty-two".