402982291 has 2 divisors, whose sum is σ = 402982292. Its totient is φ = 402982290.

The previous prime is 402982253. The next prime is 402982313. The reversal of 402982291 is 192289204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402982291 - 2⁹ = 402981779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402982291.

It is not a weakly prime, because it can be changed into another prime (402982211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201491145 + 201491146.

It is an arithmetic number, because the mean of its divisors is an integer number (201491146).

Almost surely, 2^402982291 is an apocalyptic number.

402982291 is a deficient number, since it is larger than the sum of its proper divisors (1).

402982291 is an equidigital number, since it uses as much as digits as its factorization.

402982291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 402982291 is about 20074.4188209771. The cubic root of 402982291 is about 738.6329099824.

It can be divided in two parts, 4029 and 82291, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 402982291 in words is "four hundred two million, nine hundred eighty-two thousand, two hundred ninety-one".