402231829 has 2 divisors, whose sum is σ = 402231830. Its totient is φ = 402231828.

The previous prime is 402231803. The next prime is 402231833. The reversal of 402231829 is 928132204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392634225 + 9597604 = 19815^2 + 3098^2 .

It is a cyclic number.

It is not a de Polignac number, because 402231829 - 2¹³ = 402223637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402231829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402231899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201115914 + 201115915.

It is an arithmetic number, because the mean of its divisors is an integer number (201115915).

Almost surely, 2^402231829 is an apocalyptic number.

It is an amenable number.

402231829 is a deficient number, since it is larger than the sum of its proper divisors (1).

402231829 is an equidigital number, since it uses as much as digits as its factorization.

402231829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 402231829 is about 20055.7181122990. The cubic root of 402231829 is about 738.1741136572.

The spelling of 402231829 in words is "four hundred two million, two hundred thirty-one thousand, eight hundred twenty-nine".