2902639 has 8 divisors (see below), whose sum is σ = 3035520. Its totient is φ = 2772000.

The previous prime is 2902637. The next prime is 2902657. The reversal of 2902639 is 9362092.

2902639 = 117² + 118² + ... + 217².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2902639 - 2¹ = 2902637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2902639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2902637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 3424.

It is an arithmetic number, because the mean of its divisors is an integer number (379440).

2^2902639 is an apocalyptic number.

2902639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2902639 is a deficient number, since it is larger than the sum of its proper divisors (132881).

2902639 is a wasteful number, since it uses less digits than its factorization.

2902639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 2902639 is about 1703.7132974770. The cubic root of 2902639 is about 142.6475582418.

The spelling of 2902639 in words is "two million, nine hundred two thousand, six hundred thirty-nine".