2639434 has 24 divisors (see below), whose sum is σ = 4809888. Its totient is φ = 1081080.

The previous prime is 2639431. The next prime is 2639447. The reversal of 2639434 is 4349362.

It is a super-2 number, since 2×2639434² = 13933223680712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2639396 and 2639405.

It is not an unprimeable number, because it can be changed into a prime (2639431) 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, 1669 + ... + 2839.

It is an arithmetic number, because the mean of its divisors is an integer number (200412).

2^2639434 is an apocalyptic number.

2639434 is a deficient number, since it is larger than the sum of its proper divisors (2170454).

2639434 is a wasteful number, since it uses less digits than its factorization.

2639434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1203 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 2639434 is about 1624.6334971310. The cubic root of 2639434 is about 138.1985868752.

The spelling of 2639434 in words is "two million, six hundred thirty-nine thousand, four hundred thirty-four".