761394891 has 8 divisors (see below), whose sum is σ = 1029100240. Its totient is φ = 500643072.

The previous prime is 761394883. The next prime is 761394989. The reversal of 761394891 is 198493167.

It is a happy number.

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

It is not a de Polignac number, because 761394891 - 2³ = 761394883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 761394891.

It is not an unprimeable number, because it can be changed into a prime (761394871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738126 + ... + 1738563.

It is an arithmetic number, because the mean of its divisors is an integer number (128637530).

Almost surely, 2^761394891 is an apocalyptic number.

761394891 is a deficient number, since it is larger than the sum of its proper divisors (267705349).

761394891 is a wasteful number, since it uses less digits than its factorization.

761394891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476765.

The product of its digits is 326592, while the sum is 48.

The square root of 761394891 is about 27593.3849137796. The cubic root of 761394891 is about 913.1384974166.

The spelling of 761394891 in words is "seven hundred sixty-one million, three hundred ninety-four thousand, eight hundred ninety-one".