40291807 has 8 divisors (see below), whose sum is σ = 41534640. Its totient is φ = 39061440.

The previous prime is 40291793. The next prime is 40291841. The reversal of 40291807 is 70819204.

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

It is a cyclic number.

It is not a de Polignac number, because 40291807 - 2²³ = 31903199 is a prime.

It is a super-2 number, since 2×40291807² = 3246859422650498, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40291897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3669 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (5191830).

Almost surely, 2^40291807 is an apocalyptic number.

40291807 is a deficient number, since it is larger than the sum of its proper divisors (1242833).

40291807 is a wasteful number, since it uses less digits than its factorization.

40291807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40291807 is about 6347.5827682670. The cubic root of 40291807 is about 342.8248134281.

The spelling of 40291807 in words is "forty million, two hundred ninety-one thousand, eight hundred seven".