2387949 has 4 divisors (see below), whose sum is σ = 3183936. Its totient is φ = 1591964.

The previous prime is 2387941. The next prime is 2387951. The reversal of 2387949 is 9497832.

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 a cyclic number.

It is not a de Polignac number, because 2387949 - 2³ = 2387941 is a prime.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2387949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387941) 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, 397989 + ... + 397994.

It is an arithmetic number, because the mean of its divisors is an integer number (795984).

2^2387949 is an apocalyptic number.

It is an amenable number.

2387949 is a deficient number, since it is larger than the sum of its proper divisors (795987).

2387949 is an equidigital number, since it uses as much as digits as its factorization.

2387949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795986.

The product of its digits is 108864, while the sum is 42.

The square root of 2387949 is about 1545.2990001938. The cubic root of 2387949 is about 133.6621212115.

The spelling of 2387949 in words is "two million, three hundred eighty-seven thousand, nine hundred forty-nine".