40247393 has 8 divisors (see below), whose sum is σ = 41690880. Its totient is φ = 38813040.

The previous prime is 40247371. The next prime is 40247399. The reversal of 40247393 is 39374204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40247393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40247399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7403 + ... + 11631.

It is an arithmetic number, because the mean of its divisors is an integer number (5211360).

Almost surely, 2^40247393 is an apocalyptic number.

It is an amenable number.

40247393 is a deficient number, since it is larger than the sum of its proper divisors (1443487).

40247393 is a wasteful number, since it uses less digits than its factorization.

40247393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40247393 is about 6344.0833065148. The cubic root of 40247393 is about 342.6988008837.

The spelling of 40247393 in words is "forty million, two hundred forty-seven thousand, three hundred ninety-three".