40249547 has 6 divisors (see below), whose sum is σ = 43584012. Its totient is φ = 37153272.

The previous prime is 40249537. The next prime is 40249567. The reversal of 40249547 is 74594204.

It is not a de Polignac number, because 40249547 - 2⁶ = 40249483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40249537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118913 + ... + 119250.

It is an arithmetic number, because the mean of its divisors is an integer number (7264002).

Almost surely, 2^40249547 is an apocalyptic number.

40249547 is a deficient number, since it is larger than the sum of its proper divisors (3334465).

40249547 is a wasteful number, since it uses less digits than its factorization.

40249547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238189 (or 238176 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 40249547 is about 6344.2530687229. The cubic root of 40249547 is about 342.7049144064.

The spelling of 40249547 in words is "forty million, two hundred forty-nine thousand, five hundred forty-seven".