913397887 has 8 divisors (see below), whose sum is σ = 963670400. Its totient is φ = 863345304.

The previous prime is 913397869. The next prime is 913397899. The reversal of 913397887 is 788793319.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913397887 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 (913397867) 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, 46413 + ... + 63094.

It is an arithmetic number, because the mean of its divisors is an integer number (120458800).

Almost surely, 2^913397887 is an apocalyptic number.

913397887 is a deficient number, since it is larger than the sum of its proper divisors (50272513).

913397887 is a wasteful number, since it uses less digits than its factorization.

913397887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109965.

The product of its digits is 2286144, while the sum is 55.

The square root of 913397887 is about 30222.4732111718. The cubic root of 913397887 is about 970.2567382902.

The spelling of 913397887 in words is "nine hundred thirteen million, three hundred ninety-seven thousand, eight hundred eighty-seven".