402221414 has 16 divisors (see below), whose sum is σ = 690026496. Its totient is φ = 172254600.

The previous prime is 402221389. The next prime is 402221419. The reversal of 402221414 is 414122204.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10829 + ... + 30359.

It is an arithmetic number, because the mean of its divisors is an integer number (43126656).

Almost surely, 2^402221414 is an apocalyptic number.

402221414 is a deficient number, since it is larger than the sum of its proper divisors (287805082).

402221414 is a wasteful number, since it uses less digits than its factorization.

402221414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21011.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 402221414 is about 20055.4584589832. The cubic root of 402221414 is about 738.1677424145.

Adding to 402221414 its reverse (414122204), we get a palindrome (816343618).

The spelling of 402221414 in words is "four hundred two million, two hundred twenty-one thousand, four hundred fourteen".