40221413 has 4 divisors (see below), whose sum is σ = 40235520. Its totient is φ = 40207308.

The previous prime is 40221409. The next prime is 40221431. The reversal of 40221413 is 31412204.

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 40221413 - 2² = 40221409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40221391 and 40221400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221403) 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, 1103 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (10058880).

Almost surely, 2^40221413 is an apocalyptic number.

It is an amenable number.

40221413 is a deficient number, since it is larger than the sum of its proper divisors (14107).

40221413 is a wasteful number, since it uses less digits than its factorization.

40221413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40221413 is about 6342.0353988290. The cubic root of 40221413 is about 342.6250467795.

Adding to 40221413 its reverse (31412204), we get a palindrome (71633617).

The spelling of 40221413 in words is "forty million, two hundred twenty-one thousand, four hundred thirteen".