2390949217 has 18 divisors (see below), whose sum is σ = 2491157238. Its totient is φ = 2294327808.

The previous prime is 2390949181. The next prime is 2390949221. The reversal of 2390949217 is 7129490932.

It is a happy number.

2390949217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 321700096 + 2069249121 = 17936^2 + 45489^2 .

It is not a de Polignac number, because 2390949217 - 2¹⁵ = 2390916449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2390949247) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24648913 + ... + 24649009.

Almost surely, 2^2390949217 is an apocalyptic number.

It is an amenable number.

2390949217 is a deficient number, since it is larger than the sum of its proper divisors (100208021).

2390949217 is an frugal number, since it uses more digits than its factorization.

2390949217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 2390949217 is about 48897.3334344522. Note that the first 3 decimals coincide. The cubic root of 2390949217 is about 1337.1807544112.

The spelling of 2390949217 in words is "two billion, three hundred ninety million, nine hundred forty-nine thousand, two hundred seventeen".