2139101397 has 12 divisors (see below), whose sum is σ = 3090788844. Its totient is φ = 1425617280.

The previous prime is 2139101389. The next prime is 2139101417. The reversal of 2139101397 is 7931019312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1713463236 + 425638161 = 41394^2 + 20631^2 .

It is not a de Polignac number, because 2139101397 - 2³ = 2139101389 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139101317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6054 + ... + 65687.

It is an arithmetic number, because the mean of its divisors is an integer number (257565737).

Almost surely, 2^2139101397 is an apocalyptic number.

It is an amenable number.

2139101397 is a deficient number, since it is larger than the sum of its proper divisors (951687447).

2139101397 is a wasteful number, since it uses less digits than its factorization.

2139101397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75060 (or 75057 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2139101397 is about 46250.4205061965. The cubic root of 2139101397 is about 1288.4783446086.

The spelling of 2139101397 in words is "two billion, one hundred thirty-nine million, one hundred one thousand, three hundred ninety-seven".