2390856909 has 16 divisors (see below), whose sum is σ = 3678584832. Its totient is φ = 1352938608.

The previous prime is 2390856901. The next prime is 2390856943. The reversal of 2390856909 is 9096580932.

It is not a de Polignac number, because 2390856909 - 2³ = 2390856901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2390856901) 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, 550509 + ... + 554834.

It is an arithmetic number, because the mean of its divisors is an integer number (229911552).

Almost surely, 2^2390856909 is an apocalyptic number.

It is an amenable number.

2390856909 is a deficient number, since it is larger than the sum of its proper divisors (1287727923).

2390856909 is a wasteful number, since it uses less digits than its factorization.

2390856909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105456.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 2390856909 is about 48896.3895292894. The cubic root of 2390856909 is about 1337.1635458943.

The spelling of 2390856909 in words is "two billion, three hundred ninety million, eight hundred fifty-six thousand, nine hundred nine".