40406413 has 4 divisors (see below), whose sum is σ = 40432320. Its totient is φ = 40380508.

The previous prime is 40406383. The next prime is 40406437. The reversal of 40406413 is 31460404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40406413 - 2⁵ = 40406381 is a prime.

It is a super-3 number, since 3×40406413³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10453 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (10108080).

Almost surely, 2^40406413 is an apocalyptic number.

It is an amenable number.

40406413 is a deficient number, since it is larger than the sum of its proper divisors (25907).

40406413 is a wasteful number, since it uses less digits than its factorization.

40406413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25906.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40406413 is about 6356.6038888702. The cubic root of 40406413 is about 343.1495493178.

Adding to 40406413 its reverse (31460404), we get a palindrome (71866817).

The spelling of 40406413 in words is "forty million, four hundred six thousand, four hundred thirteen".