402044471 has 2 divisors, whose sum is σ = 402044472. Its totient is φ = 402044470.

The previous prime is 402044449. The next prime is 402044477. The reversal of 402044471 is 174440204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402044471 is a prime.

It is a super-3 number, since 3×402044471³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402044471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402044477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201022235 + 201022236.

It is an arithmetic number, because the mean of its divisors is an integer number (201022236).

Almost surely, 2^402044471 is an apocalyptic number.

402044471 is a deficient number, since it is larger than the sum of its proper divisors (1).

402044471 is an equidigital number, since it uses as much as digits as its factorization.

402044471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 402044471 is about 20051.0466310365. The cubic root of 402044471 is about 738.0594829933.

Adding to 402044471 its reverse (174440204), we get a palindrome (576484675).

The spelling of 402044471 in words is "four hundred two million, forty-four thousand, four hundred seventy-one".