2391854 has 4 divisors (see below), whose sum is σ = 3587784. Its totient is φ = 1195926.

The previous prime is 2391847. The next prime is 2391859. The reversal of 2391854 is 4581932.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2391854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597962 + ... + 597965.

It is an arithmetic number, because the mean of its divisors is an integer number (896946).

2^2391854 is an apocalyptic number.

2391854 is a deficient number, since it is larger than the sum of its proper divisors (1195930).

2391854 is a wasteful number, since it uses less digits than its factorization.

2391854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195929.

The product of its digits is 8640, while the sum is 32.

The square root of 2391854 is about 1546.5619935845. The cubic root of 2391854 is about 133.7349405119.

The spelling of 2391854 in words is "two million, three hundred ninety-one thousand, eight hundred fifty-four".