402894049 has 2 divisors, whose sum is σ = 402894050. Its totient is φ = 402894048.

The previous prime is 402894043. The next prime is 402894077. The reversal of 402894049 is 940498204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385729600 + 17164449 = 19640^2 + 4143^2 .

It is a cyclic number.

It is not a de Polignac number, because 402894049 - 2¹⁷ = 402762977 is a prime.

It is a super-2 number, since 2×402894049² = 324647229439228802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402894043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201447024 + 201447025.

It is an arithmetic number, because the mean of its divisors is an integer number (201447025).

Almost surely, 2^402894049 is an apocalyptic number.

It is an amenable number.

402894049 is a deficient number, since it is larger than the sum of its proper divisors (1).

402894049 is an equidigital number, since it uses as much as digits as its factorization.

402894049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 402894049 is about 20072.2208287972. The cubic root of 402894049 is about 738.5789926394.

The spelling of 402894049 in words is "four hundred two million, eight hundred ninety-four thousand, forty-nine".