40790669 has 2 divisors, whose sum is σ = 40790670. Its totient is φ = 40790668.

The previous prime is 40790593. The next prime is 40790681. The reversal of 40790669 is 96609704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33200644 + 7590025 = 5762^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 40790669 - 2¹² = 40786573 is a prime.

It is a super-2 number, since 2×40790669² = 3327757354935122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40090669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20395334 + 20395335.

It is an arithmetic number, because the mean of its divisors is an integer number (20395335).

Almost surely, 2^40790669 is an apocalyptic number.

It is an amenable number.

40790669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40790669 is an equidigital number, since it uses as much as digits as its factorization.

40790669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 40790669 is about 6386.7573149447. The cubic root of 40790669 is about 344.2338779350.

The spelling of 40790669 in words is "forty million, seven hundred ninety thousand, six hundred sixty-nine".