2690239 has 2 divisors, whose sum is σ = 2690240. Its totient is φ = 2690238.

The previous prime is 2690201. The next prime is 2690249. The reversal of 2690239 is 9320962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2690239 - 2⁷ = 2690111 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2690239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2690249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345119 + 1345120.

It is an arithmetic number, because the mean of its divisors is an integer number (1345120).

2^2690239 is an apocalyptic number.

2690239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690239 is an equidigital number, since it uses as much as digits as its factorization.

2690239 is an evil number, because the sum of its binary digits is even.

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

The square root of 2690239 is about 1640.1948055033. The cubic root of 2690239 is about 139.0796603576.

The spelling of 2690239 in words is "two million, six hundred ninety thousand, two hundred thirty-nine".