872199438 has 32 divisors (see below), whose sum is σ = 1921836672. Its totient is φ = 261684000.

The previous prime is 872199407. The next prime is 872199439. The reversal of 872199438 is 834991278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872199439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58756 + ... + 72087.

It is an arithmetic number, because the mean of its divisors is an integer number (60057396).

Almost surely, 2^872199438 is an apocalyptic number.

872199438 is an abundant number, since it is smaller than the sum of its proper divisors (1049637234).

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

872199438 is a wasteful number, since it uses less digits than its factorization.

872199438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130960.

The product of its digits is 870912, while the sum is 51.

The square root of 872199438 is about 29533.0228388494. The cubic root of 872199438 is about 955.4440660252. Note that the first 3 decimals are identical.

The spelling of 872199438 in words is "eight hundred seventy-two million, one hundred ninety-nine thousand, four hundred thirty-eight".