2139297 has 8 divisors (see below), whose sum is σ = 3020256. Its totient is φ = 1342272.

The previous prime is 2139283. The next prime is 2139307. The reversal of 2139297 is 7929312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139297 - 2⁶ = 2139233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139227) 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 7 ways as a sum of consecutive naturals, for example, 20923 + ... + 21024.

It is an arithmetic number, because the mean of its divisors is an integer number (377532).

2^2139297 is an apocalyptic number.

It is an amenable number.

2139297 is a deficient number, since it is larger than the sum of its proper divisors (880959).

2139297 is a wasteful number, since it uses less digits than its factorization.

2139297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41967.

The product of its digits is 6804, while the sum is 33.

The square root of 2139297 is about 1462.6335836429. The cubic root of 2139297 is about 128.8517616948.

The spelling of 2139297 in words is "two million, one hundred thirty-nine thousand, two hundred ninety-seven".