2900391 has 16 divisors (see below), whose sum is σ = 4300800. Its totient is φ = 1726560.

The previous prime is 2900389. The next prime is 2900399. The reversal of 2900391 is 1930092.

It is a happy number.

It is not a de Polignac number, because 2900391 - 2¹ = 2900389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2900399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (268800).

2^2900391 is an apocalyptic number.

2900391 is a deficient number, since it is larger than the sum of its proper divisors (1400409).

2900391 is a wasteful number, since it uses less digits than its factorization.

2900391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 2900391 is about 1703.0534342762. The cubic root of 2900391 is about 142.6107234247.

Subtracting from 2900391 its reverse (1930092), we obtain a cube (970299 = 99³).

The spelling of 2900391 in words is "two million, nine hundred thousand, three hundred ninety-one".