40507393 has 8 divisors (see below), whose sum is σ = 42451200. Its totient is φ = 38578848.

The previous prime is 40507381. The next prime is 40507399. The reversal of 40507393 is 39370504.

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 40507393 - 2⁵ = 40507361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40507399) 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, 1813 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (5306400).

Almost surely, 2^40507393 is an apocalyptic number.

It is an amenable number.

40507393 is a deficient number, since it is larger than the sum of its proper divisors (1943807).

40507393 is a wasteful number, since it uses less digits than its factorization.

40507393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 40507393 is about 6364.5418531109. The cubic root of 40507393 is about 343.4351674759.

Adding to 40507393 its reverse (39370504), we get a palindrome (79877897).

The spelling of 40507393 in words is "forty million, five hundred seven thousand, three hundred ninety-three".