2500389 has 10 divisors (see below), whose sum is σ = 3735270. Its totient is φ = 1666872.

The previous prime is 2500363. The next prime is 2500403. The reversal of 2500389 is 9830052.

It can be written as a sum of positive squares in only one way, i.e., 1520289 + 980100 = 1233^2 + 990^2 .

It is not a de Polignac number, because 2500389 - 2⁵ = 2500357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500339) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15354 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (373527).

2^2500389 is an apocalyptic number.

It is an amenable number.

2500389 is a deficient number, since it is larger than the sum of its proper divisors (1234881).

2500389 is an equidigital number, since it uses as much as digits as its factorization.

2500389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30881 (or 30872 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2500389 is about 1581.2618379004. The cubic root of 2500389 is about 135.7279198544.

It can be divided in two parts, 250038 and 9, that added together give a cube (250047 = 63³).

The spelling of 2500389 in words is "two million, five hundred thousand, three hundred eighty-nine".