76874989 has 2 divisors, whose sum is σ = 76874990. Its totient is φ = 76874988.

The previous prime is 76874983. The next prime is 76875023. The reversal of 76874989 is 98947867.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66096900 + 10778089 = 8130^2 + 3283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76874989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76874983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38437494 + 38437495.

It is an arithmetic number, because the mean of its divisors is an integer number (38437495).

Almost surely, 2^76874989 is an apocalyptic number.

It is an amenable number.

76874989 is a deficient number, since it is larger than the sum of its proper divisors (1).

76874989 is an equidigital number, since it uses as much as digits as its factorization.

76874989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The square root of 76874989 is about 8767.8383310825. The cubic root of 76874989 is about 425.2017293767.

It can be divided in two parts, 768 and 74989, that added together give a palindrome (75757).

The spelling of 76874989 in words is "seventy-six million, eight hundred seventy-four thousand, nine hundred eighty-nine".