40240395 has 40 divisors (see below), whose sum is σ = 77693616. Its totient is φ = 19808064.

The previous prime is 40240391. The next prime is 40240397. The reversal of 40240395 is 59304204.

It is not a de Polignac number, because 40240395 - 2² = 40240391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40240391) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1444 + ... + 9086.

Almost surely, 2^40240395 is an apocalyptic number.

40240395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40240395 is a deficient number, since it is larger than the sum of its proper divisors (37453221).

40240395 is a wasteful number, since it uses less digits than its factorization.

40240395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673 (or 7664 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40240395 is about 6343.5317450140. The cubic root of 40240395 is about 342.6789375250.

Adding to 40240395 its reverse (59304204), we get a palindrome (99544599).

The spelling of 40240395 in words is "forty million, two hundred forty thousand, three hundred ninety-five".