2398990 has 32 divisors (see below), whose sum is σ = 4777056. Its totient is φ = 860160.

The previous prime is 2398987. The next prime is 2399011. The reversal of 2398990 is 998932.

2398990 = T₅₁ + T₅₂ + ... + T₂₄₃.

It is a happy number.

It is a d-powerful number, because it can be written as 2⁵ + 3¹¹ + 9⁴ + 8⁷ + 9⁵ + 9⁵ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12334 + ... + 12526.

It is an arithmetic number, because the mean of its divisors is an integer number (149283).

2^2398990 is an apocalyptic number.

2398990 is a deficient number, since it is larger than the sum of its proper divisors (2378066).

2398990 is a wasteful number, since it uses less digits than its factorization.

2398990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 2398990 is about 1548.8673280820. The cubic root of 2398990 is about 133.8678060679.

It can be divided in two parts, 239 and 8990, that added together give a palindrome (9229).

The spelling of 2398990 in words is "two million, three hundred ninety-eight thousand, nine hundred ninety".