40715869 has 2 divisors, whose sum is σ = 40715870. Its totient is φ = 40715868.

The previous prime is 40715863. The next prime is 40715881. The reversal of 40715869 is 96851704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31775769 + 8940100 = 5637^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 40715869 - 2³ = 40715861 is a prime.

It is a super-2 number, since 2×40715869² = 3315563976850322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40715861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20357934 + 20357935.

It is an arithmetic number, because the mean of its divisors is an integer number (20357935).

Almost surely, 2^40715869 is an apocalyptic number.

It is an amenable number.

40715869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40715869 is an equidigital number, since it uses as much as digits as its factorization.

40715869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 40715869 is about 6380.8987611464. The cubic root of 40715869 is about 344.0233359192.

The spelling of 40715869 in words is "forty million, seven hundred fifteen thousand, eight hundred sixty-nine".