40137469 has 2 divisors, whose sum is σ = 40137470. Its totient is φ = 40137468.

The previous prime is 40137437. The next prime is 40137473. The reversal of 40137469 is 96473104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21040569 + 19096900 = 4587^2 + 4370^2 .

It is a cyclic number.

It is not a de Polignac number, because 40137469 - 2⁵ = 40137437 is a prime.

It is a super-2 number, since 2×40137469² = 3222032835451922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40137569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20068734 + 20068735.

It is an arithmetic number, because the mean of its divisors is an integer number (20068735).

Almost surely, 2^40137469 is an apocalyptic number.

It is an amenable number.

40137469 is a deficient number, since it is larger than the sum of its proper divisors (1).

40137469 is an equidigital number, since it uses as much as digits as its factorization.

40137469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40137469 is about 6335.4138775616. The cubic root of 40137469 is about 342.3865225146.

The spelling of 40137469 in words is "forty million, one hundred thirty-seven thousand, four hundred sixty-nine".