77499130 has 8 divisors (see below), whose sum is σ = 139498452. Its totient is φ = 30999648.

The previous prime is 77499077. The next prime is 77499131. The reversal of 77499130 is 3199477.

It can be written as a sum of positive squares in 2 ways, for example, as 77422401 + 76729 = 8799^2 + 277^2 .

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

It is a super-2 number, since 2×77499130² = 12012230301513800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77499131) 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, 3874947 + ... + 3874966.

Almost surely, 2^77499130 is an apocalyptic number.

77499130 is a deficient number, since it is larger than the sum of its proper divisors (61999322).

77499130 is a wasteful number, since it uses less digits than its factorization.

77499130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749920.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 77499130 is about 8803.3590180113. The cubic root of 77499130 is about 426.3493537804.

The spelling of 77499130 in words is "seventy-seven million, four hundred ninety-nine thousand, one hundred thirty".