40415369 has 2 divisors, whose sum is σ = 40415370. Its totient is φ = 40415368.

The previous prime is 40415339. The next prime is 40415371. The reversal of 40415369 is 96351404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 12166144 = 5315^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 40415369 - 2¹⁶ = 40349833 is a prime.

It is a super-2 number, since 2×40415369² = 3266804102812322, which contains 22 as substring.

Together with 40415371, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2457419 and since 40415369 and 2457419 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40415329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20207684 + 20207685.

It is an arithmetic number, because the mean of its divisors is an integer number (20207685).

Almost surely, 2^40415369 is an apocalyptic number.

It is an amenable number.

40415369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40415369 is an equidigital number, since it uses as much as digits as its factorization.

40415369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40415369 is about 6357.3083140587. The cubic root of 40415369 is about 343.1749002469.

The spelling of 40415369 in words is "forty million, four hundred fifteen thousand, three hundred sixty-nine".