40715849 has 4 divisors (see below), whose sum is σ = 40729236. Its totient is φ = 40702464.

The previous prime is 40715839. The next prime is 40715861. The reversal of 40715849 is 94851704.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 39287824 + 1428025 = 6268^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 40715849 - 2⁸ = 40715593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40715839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (10182309).

Almost surely, 2^40715849 is an apocalyptic number.

It is an amenable number.

40715849 is a deficient number, since it is larger than the sum of its proper divisors (13387).

40715849 is an equidigital number, since it uses as much as digits as its factorization.

40715849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13386.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 40715849 is about 6380.8971939689. The cubic root of 40715849 is about 344.0232795901.

The spelling of 40715849 in words is "forty million, seven hundred fifteen thousand, eight hundred forty-nine".