401442049 has 2 divisors, whose sum is σ = 401442050. Its totient is φ = 401442048.

The previous prime is 401442011. The next prime is 401442061. The reversal of 401442049 is 940244104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287913024 + 113529025 = 16968^2 + 10655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401442049 is a prime.

It is a super-2 number, since 2×401442049² = 322311437410636802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401442079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200721024 + 200721025.

It is an arithmetic number, because the mean of its divisors is an integer number (200721025).

Almost surely, 2^401442049 is an apocalyptic number.

It is an amenable number.

401442049 is a deficient number, since it is larger than the sum of its proper divisors (1).

401442049 is an equidigital number, since it uses as much as digits as its factorization.

401442049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 401442049 is about 20036.0187911671. The cubic root of 401442049 is about 737.6906634878.

The spelling of 401442049 in words is "four hundred one million, four hundred forty-two thousand, forty-nine".