899520037 has 4 divisors (see below), whose sum is σ = 968713900. Its totient is φ = 830326176.

The previous prime is 899520029. The next prime is 899520067. The reversal of 899520037 is 730025998.

It is a happy number.

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 497557636 + 401962401 = 22306^2 + 20049^2 .

It is a cyclic number.

It is not a de Polignac number, because 899520037 - 2³ = 899520029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 899519975 and 899520002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899520067) 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, 34596912 + ... + 34596937.

It is an arithmetic number, because the mean of its divisors is an integer number (242178475).

Almost surely, 2^899520037 is an apocalyptic number.

It is an amenable number.

899520037 is a deficient number, since it is larger than the sum of its proper divisors (69193863).

899520037 is a wasteful number, since it uses less digits than its factorization.

899520037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69193862.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 899520037 is about 29991.9995498800. Note that the first 3 decimals coincide. The cubic root of 899520037 is about 965.3177247606.

The spelling of 899520037 in words is "eight hundred ninety-nine million, five hundred twenty thousand, thirty-seven".