2138499 has 12 divisors (see below), whose sum is σ = 3369912. Its totient is φ = 1296000.

The previous prime is 2138491. The next prime is 2138501. The reversal of 2138499 is 9948312.

2138499 = T₂₅₄ + T₂₅₅ + ... + T₃₀₇.

It is not a de Polignac number, because 2138499 - 2³ = 2138491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2138491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10702 + ... + 10899.

It is an arithmetic number, because the mean of its divisors is an integer number (280826).

2^2138499 is an apocalyptic number.

2138499 is a deficient number, since it is larger than the sum of its proper divisors (1231413).

2138499 is a wasteful number, since it uses less digits than its factorization.

2138499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21618 (or 21615 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2138499 is about 1462.3607626027. The cubic root of 2138499 is about 128.8357382856.

The spelling of 2138499 in words is "two million, one hundred thirty-eight thousand, four hundred ninety-nine".