2391252789 has 4 divisors (see below), whose sum is σ = 3188337056. Its totient is φ = 1594168524.

The previous prime is 2391252767. The next prime is 2391252803. The reversal of 2391252789 is 9872521932.

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 not a de Polignac number, because 2391252789 - 2¹⁵ = 2391220021 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 (2391252289) 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, 398542129 + ... + 398542134.

It is an arithmetic number, because the mean of its divisors is an integer number (797084264).

Almost surely, 2^2391252789 is an apocalyptic number.

It is an amenable number.

2391252789 is a deficient number, since it is larger than the sum of its proper divisors (797084267).

2391252789 is an equidigital number, since it uses as much as digits as its factorization.

2391252789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797084266.

The product of its digits is 544320, while the sum is 48.

The square root of 2391252789 is about 48900.4375133802. The cubic root of 2391252789 is about 1337.2373446912.

The spelling of 2391252789 in words is "two billion, three hundred ninety-one million, two hundred fifty-two thousand, seven hundred eighty-nine".