77099137 has 4 divisors (see below), whose sum is σ = 77271300. Its totient is φ = 76926976.

The previous prime is 77099123. The next prime is 77099149. The reversal of 77099137 is 73199077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40144896 + 36954241 = 6336^2 + 6079^2 .

It is a cyclic number.

It is not a de Polignac number, because 77099137 - 2¹¹ = 77097089 is a prime.

It is a super-2 number, since 2×77099137² = 11888553852289538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77099093 and 77099102.

It is not an unprimeable number, because it can be changed into a prime (77099107) 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, 85408 + ... + 86305.

It is an arithmetic number, because the mean of its divisors is an integer number (19317825).

Almost surely, 2^77099137 is an apocalyptic number.

It is an amenable number.

77099137 is a deficient number, since it is larger than the sum of its proper divisors (172163).

77099137 is a wasteful number, since it uses less digits than its factorization.

77099137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172162.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 77099137 is about 8780.6114251799. The cubic root of 77099137 is about 425.6145885601.

The spelling of 77099137 in words is "seventy-seven million, ninety-nine thousand, one hundred thirty-seven".