899207838 has 16 divisors (see below), whose sum is σ = 1998239760. Its totient is φ = 299735928.

The previous prime is 899207833. The next prime is 899207891. The reversal of 899207838 is 838702998.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 16651997 = 899207838 / (8 + 9 + 9 + 2 + 0 + 7 + 8 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899207833) 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, 8325945 + ... + 8326052.

It is an arithmetic number, because the mean of its divisors is an integer number (124889985).

Almost surely, 2^899207838 is an apocalyptic number.

899207838 is an abundant number, since it is smaller than the sum of its proper divisors (1099031922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899207838 is a wasteful number, since it uses less digits than its factorization.

899207838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652008 (or 16652002 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 899207838 is about 29986.7943935326. The cubic root of 899207838 is about 965.2060333071.

The spelling of 899207838 in words is "eight hundred ninety-nine million, two hundred seven thousand, eight hundred thirty-eight".