3240405437 has 2 divisors, whose sum is σ = 3240405438. Its totient is φ = 3240405436.

The previous prime is 3240405433. The next prime is 3240405457. The reversal of 3240405437 is 7345040423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2919673156 + 320732281 = 54034^2 + 17909^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240405437 - 2² = 3240405433 is a prime.

It is a super-2 number, since 2×3240405437² = 21000454792278321938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3240405431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620202718 + 1620202719.

It is an arithmetic number, because the mean of its divisors is an integer number (1620202719).

Almost surely, 2^3240405437 is an apocalyptic number.

It is an amenable number.

3240405437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240405437 is an equidigital number, since it uses as much as digits as its factorization.

3240405437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 3240405437 is about 56924.5591726453. The cubic root of 3240405437 is about 1479.7889638526.

The spelling of 3240405437 in words is "three billion, two hundred forty million, four hundred five thousand, four hundred thirty-seven".