2287691939 has 8 divisors (see below), whose sum is σ = 2472830640. Its totient is φ = 2103862176.

The previous prime is 2287691933. The next prime is 2287691953. The reversal of 2287691939 is 9391967822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2287691939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2287691933) 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, 323597 + ... + 330590.

It is an arithmetic number, because the mean of its divisors is an integer number (309103830).

Almost surely, 2^2287691939 is an apocalyptic number.

2287691939 is a deficient number, since it is larger than the sum of its proper divisors (185138701).

2287691939 is a wasteful number, since it uses less digits than its factorization.

2287691939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654469.

The product of its digits is 2939328, while the sum is 56.

The square root of 2287691939 is about 47829.8226946327. The cubic root of 2287691939 is about 1317.6473126870.

The spelling of 2287691939 in words is "two billion, two hundred eighty-seven million, six hundred ninety-one thousand, nine hundred thirty-nine".