40719169 has 2 divisors, whose sum is σ = 40719170. Its totient is φ = 40719168.

The previous prime is 40719163. The next prime is 40719179. The reversal of 40719169 is 96191704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39250225 + 1468944 = 6265^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 40719169 - 2¹¹ = 40717121 is a prime.

It is a super-2 number, since 2×40719169² = 3316101448101122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40719163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20359584 + 20359585.

It is an arithmetic number, because the mean of its divisors is an integer number (20359585).

Almost surely, 2^40719169 is an apocalyptic number.

It is an amenable number.

40719169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40719169 is an equidigital number, since it uses as much as digits as its factorization.

40719169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 40719169 is about 6381.1573401696. The cubic root of 40719169 is about 344.0326299722.

The spelling of 40719169 in words is "forty million, seven hundred nineteen thousand, one hundred sixty-nine".