77139190 has 8 divisors (see below), whose sum is σ = 138850560. Its totient is φ = 30855672.

The previous prime is 77139187. The next prime is 77139203. The reversal of 77139190 is 9193177.

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

It is a super-2 number, since 2×77139190² = 11900909267712200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3856950 + ... + 3856969.

It is an arithmetic number, because the mean of its divisors is an integer number (17356320).

Almost surely, 2^77139190 is an apocalyptic number.

77139190 is a deficient number, since it is larger than the sum of its proper divisors (61711370).

77139190 is a wasteful number, since it uses less digits than its factorization.

77139190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7713926.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 77139190 is about 8782.8918927652. The cubic root of 77139190 is about 425.6882780575.

The spelling of 77139190 in words is "seventy-seven million, one hundred thirty-nine thousand, one hundred ninety".