2139193 has 12 divisors (see below), whose sum is σ = 2513700. Its totient is φ = 1815072.

The previous prime is 2139167. The next prime is 2139199. The reversal of 2139193 is 3919312.

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 946729 = 1092^2 + 973^2 .

It is not a de Polignac number, because 2139193 - 2¹⁷ = 2008121 is a prime.

It is a super-2 number, since 2×2139193² = 9152293382498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2139199) 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, 7155 + ... + 7447.

It is an arithmetic number, because the mean of its divisors is an integer number (209475).

2^2139193 is an apocalyptic number.

It is an amenable number.

2139193 is a deficient number, since it is larger than the sum of its proper divisors (374507).

2139193 is a wasteful number, since it uses less digits than its factorization.

2139193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 449 counting only the distinct ones).

The product of its digits is 1458, while the sum is 28.

The square root of 2139193 is about 1462.5980309025. The cubic root of 2139193 is about 128.8496736568.

It can be divided in two parts, 2139 and 193, that added together give a palindrome (2332).

The spelling of 2139193 in words is "two million, one hundred thirty-nine thousand, one hundred ninety-three".