40747647 has 16 divisors (see below), whose sum is σ = 57920000. Its totient is φ = 25406784.

The previous prime is 40747631. The next prime is 40747667. The reversal of 40747647 is 74674704.

It is not a de Polignac number, because 40747647 - 2⁴ = 40747631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40747627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22 + ... + 9027.

It is an arithmetic number, because the mean of its divisors is an integer number (3620000).

Almost surely, 2^40747647 is an apocalyptic number.

40747647 is a deficient number, since it is larger than the sum of its proper divisors (17172353).

40747647 is a wasteful number, since it uses less digits than its factorization.

40747647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150.

The product of its (nonzero) digits is 131712, while the sum is 39.

The square root of 40747647 is about 6383.3883635574. The cubic root of 40747647 is about 344.1128139769.

The spelling of 40747647 in words is "forty million, seven hundred forty-seven thousand, six hundred forty-seven".