403221413 has 32 divisors (see below), whose sum is σ = 484663296. Its totient is φ = 328364928.

The previous prime is 403221409. The next prime is 403221431. The reversal of 403221413 is 314122304.

It is a cyclic number.

It is not a de Polignac number, because 403221413 - 2² = 403221409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403221463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2473670 + ... + 2473832.

It is an arithmetic number, because the mean of its divisors is an integer number (15145728).

Almost surely, 2^403221413 is an apocalyptic number.

It is an amenable number.

403221413 is a deficient number, since it is larger than the sum of its proper divisors (81441883).

403221413 is a wasteful number, since it uses less digits than its factorization.

403221413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403221413 is about 20080.3738262015. The cubic root of 403221413 is about 738.7789779852.

Adding to 403221413 its reverse (314122304), we get a palindrome (717343717).

The spelling of 403221413 in words is "four hundred three million, two hundred twenty-one thousand, four hundred thirteen".