40902469 has 2 divisors, whose sum is σ = 40902470. Its totient is φ = 40902468.

The previous prime is 40902467. The next prime is 40902529. The reversal of 40902469 is 96420904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40068900 + 833569 = 6330^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 40902469 - 2¹ = 40902467 is a prime.

It is a super-2 number, since 2×40902469² = 3346023940591922, which contains 22 as substring.

Together with 40902467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40902467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20451234 + 20451235.

It is an arithmetic number, because the mean of its divisors is an integer number (20451235).

Almost surely, 2^40902469 is an apocalyptic number.

It is an amenable number.

40902469 is a deficient number, since it is larger than the sum of its proper divisors (1).

40902469 is an equidigital number, since it uses as much as digits as its factorization.

40902469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 40902469 is about 6395.5038112724. The cubic root of 40902469 is about 344.5480857463.

The spelling of 40902469 in words is "forty million, nine hundred two thousand, four hundred sixty-nine".