76749089 has 4 divisors (see below), whose sum is σ = 78621060. Its totient is φ = 74877120.

The previous prime is 76749077. The next prime is 76749107. The reversal of 76749089 is 98094767.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98094767 = 67 ⋅1464101.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 64963600 = 3433^2 + 8060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76749089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76749059) 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, 935924 + ... + 936005.

It is an arithmetic number, because the mean of its divisors is an integer number (19655265).

Almost surely, 2^76749089 is an apocalyptic number.

It is an amenable number.

76749089 is a deficient number, since it is larger than the sum of its proper divisors (1871971).

76749089 is a wasteful number, since it uses less digits than its factorization.

76749089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871970.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 76749089 is about 8760.6557402971. The cubic root of 76749089 is about 424.9694815456.

The spelling of 76749089 in words is "seventy-six million, seven hundred forty-nine thousand, eighty-nine".