40497407 has 4 divisors (see below), whose sum is σ = 41052240. Its totient is φ = 39942576.

The previous prime is 40497389. The next prime is 40497419. The reversal of 40497407 is 70479404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40497407 - 2¹² = 40493311 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40497007) 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 3 ways as a sum of consecutive naturals, for example, 277307 + ... + 277452.

It is an arithmetic number, because the mean of its divisors is an integer number (10263060).

Almost surely, 2^40497407 is an apocalyptic number.

40497407 is a deficient number, since it is larger than the sum of its proper divisors (554833).

40497407 is an equidigital number, since it uses as much as digits as its factorization.

40497407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554832.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40497407 is about 6363.7573020976. The cubic root of 40497407 is about 343.4069436120.

It can be divided in two parts, 40497 and 407, that added together give a palindrome (40904).

The spelling of 40497407 in words is "forty million, four hundred ninety-seven thousand, four hundred seven".