76990189 has 4 divisors (see below), whose sum is σ = 77009724. Its totient is φ = 76970656.

The previous prime is 76990187. The next prime is 76990201. The reversal of 76990189 is 98109967.

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 44328964 + 32661225 = 6658^2 + 5715^2 .

It is a cyclic number.

It is not a de Polignac number, because 76990189 - 2¹ = 76990187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76990181) 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, 1552 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (19252431).

Almost surely, 2^76990189 is an apocalyptic number.

It is an amenable number.

76990189 is a deficient number, since it is larger than the sum of its proper divisors (19535).

76990189 is a wasteful number, since it uses less digits than its factorization.

76990189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19534.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 76990189 is about 8774.4053359758. The cubic root of 76990189 is about 425.4140168514.

The spelling of 76990189 in words is "seventy-six million, nine hundred ninety thousand, one hundred eighty-nine".