2629639 has 2 divisors, whose sum is σ = 2629640. Its totient is φ = 2629638.

The previous prime is 2629621. The next prime is 2629643. The reversal of 2629639 is 9369262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2629639 - 2⁷ = 2629511 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 6 + 2²¹ + 9³ + 6² + 3⁵ + 9⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 2629598 and 2629607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2629139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314819 + 1314820.

It is an arithmetic number, because the mean of its divisors is an integer number (1314820).

2^2629639 is an apocalyptic number.

2629639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2629639 is an equidigital number, since it uses as much as digits as its factorization.

2629639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 2629639 is about 1621.6161691350. The cubic root of 2629639 is about 138.0274222618.

It can be divided in two parts, 26296 and 39, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 2629639 in words is "two million, six hundred twenty-nine thousand, six hundred thirty-nine".