402196321 has 4 divisors (see below), whose sum is σ = 402273472. Its totient is φ = 402119172.

The previous prime is 402196309. The next prime is 402196339. The reversal of 402196321 is 123691204.

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 a de Polignac number, because none of the positive numbers 2^k-402196321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402196321.

It is not an unprimeable number, because it can be changed into a prime (402196121) 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, 30141 + ... + 41386.

It is an arithmetic number, because the mean of its divisors is an integer number (100568368).

Almost surely, 2^402196321 is an apocalyptic number.

It is an amenable number.

402196321 is a deficient number, since it is larger than the sum of its proper divisors (77151).

402196321 is an equidigital number, since it uses as much as digits as its factorization.

402196321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77150.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 402196321 is about 20054.8328589395. The cubic root of 402196321 is about 738.1523916419.

The spelling of 402196321 in words is "four hundred two million, one hundred ninety-six thousand, three hundred twenty-one".