2391995 has 4 divisors (see below), whose sum is σ = 2870400. Its totient is φ = 1913592.

The previous prime is 2391979. The next prime is 2391997. The reversal of 2391995 is 5991932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2391995 - 2⁴ = 2391979 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2391997) 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, 239195 + ... + 239204.

It is an arithmetic number, because the mean of its divisors is an integer number (717600).

2^2391995 is an apocalyptic number.

2391995 is a deficient number, since it is larger than the sum of its proper divisors (478405).

2391995 is an equidigital number, since it uses as much as digits as its factorization.

2391995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478404.

The product of its digits is 21870, while the sum is 38.

The square root of 2391995 is about 1546.6075778943. The cubic root of 2391995 is about 133.7375683557.

The spelling of 2391995 in words is "two million, three hundred ninety-one thousand, nine hundred ninety-five".