2539694 has 4 divisors (see below), whose sum is σ = 3809544. Its totient is φ = 1269846.

The previous prime is 2539661. The next prime is 2539699. The reversal of 2539694 is 4969352.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2539694² = 12900091227272, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 5⁵ + 3¹¹ + 9 + 6² + 9² + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634922 + ... + 634925.

It is an arithmetic number, because the mean of its divisors is an integer number (952386).

2^2539694 is an apocalyptic number.

2539694 is a deficient number, since it is larger than the sum of its proper divisors (1269850).

2539694 is a wasteful number, since it uses less digits than its factorization.

2539694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269849.

The product of its digits is 58320, while the sum is 38.

The square root of 2539694 is about 1593.6417414212. The cubic root of 2539694 is about 136.4354196335.

The spelling of 2539694 in words is "two million, five hundred thirty-nine thousand, six hundred ninety-four".