899005157 has 4 divisors (see below), whose sum is σ = 905472960. Its totient is φ = 892537356.

The previous prime is 899005153. The next prime is 899005193. The reversal of 899005157 is 751500998.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 899005157 - 2² = 899005153 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 (899005153) 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, 3233693 + ... + 3233970.

It is an arithmetic number, because the mean of its divisors is an integer number (226368240).

Almost surely, 2^899005157 is an apocalyptic number.

It is an amenable number.

899005157 is a deficient number, since it is larger than the sum of its proper divisors (6467803).

899005157 is a wasteful number, since it uses less digits than its factorization.

899005157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467802.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 899005157 is about 29983.4146987964. The cubic root of 899005157 is about 965.1335088711.

The spelling of 899005157 in words is "eight hundred ninety-nine million, five thousand, one hundred fifty-seven".