891375659 has 4 divisors (see below), whose sum is σ = 892879416. Its totient is φ = 889871904.

The previous prime is 891375613. The next prime is 891375689. The reversal of 891375659 is 956573198.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 891375659 - 2¹² = 891371563 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 891375659.

It is not an unprimeable number, because it can be changed into a prime (891375689) 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, 750989 + ... + 752174.

It is an arithmetic number, because the mean of its divisors is an integer number (223219854).

Almost surely, 2^891375659 is an apocalyptic number.

891375659 is a deficient number, since it is larger than the sum of its proper divisors (1503757).

891375659 is a wasteful number, since it uses less digits than its factorization.

891375659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503756.

The product of its digits is 2041200, while the sum is 53.

The square root of 891375659 is about 29855.9149750933. The cubic root of 891375659 is about 962.3955144688.

The spelling of 891375659 in words is "eight hundred ninety-one million, three hundred seventy-five thousand, six hundred fifty-nine".