401992529 has 2 divisors, whose sum is σ = 401992530. Its totient is φ = 401992528.

The previous prime is 401992499. The next prime is 401992553. The reversal of 401992529 is 925299104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401922304 + 70225 = 20048^2 + 265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401992529 is a prime.

It is not a weakly prime, because it can be changed into another prime (401992589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200996264 + 200996265.

It is an arithmetic number, because the mean of its divisors is an integer number (200996265).

Almost surely, 2^401992529 is an apocalyptic number.

It is an amenable number.

401992529 is a deficient number, since it is larger than the sum of its proper divisors (1).

401992529 is an equidigital number, since it uses as much as digits as its factorization.

401992529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 401992529 is about 20049.7513450915. The cubic root of 401992529 is about 738.0276971756.

The spelling of 401992529 in words is "four hundred one million, nine hundred ninety-two thousand, five hundred twenty-nine".