2490309389 has 2 divisors, whose sum is σ = 2490309390. Its totient is φ = 2490309388.

The previous prime is 2490309343. The next prime is 2490309401. The reversal of 2490309389 is 9839030942.

2490309389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2195672164 + 294637225 = 46858^2 + 17165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2490309389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2490300389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245154694 + 1245154695.

It is an arithmetic number, because the mean of its divisors is an integer number (1245154695).

Almost surely, 2^2490309389 is an apocalyptic number.

It is an amenable number.

2490309389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2490309389 is an equidigital number, since it uses as much as digits as its factorization.

2490309389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 2490309389 is about 49902.9997996112. Note that the first 3 decimals coincide. The cubic root of 2490309389 is about 1355.4529132323.

The spelling of 2490309389 in words is "two billion, four hundred ninety million, three hundred nine thousand, three hundred eighty-nine".