401320069 has 2 divisors, whose sum is σ = 401320070. Its totient is φ = 401320068.

The previous prime is 401320063. The next prime is 401320111. The reversal of 401320069 is 960023104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348568900 + 52751169 = 18670^2 + 7263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401320069 is a prime.

It is a super-2 number, since 2×401320069² = 322115595564329522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401320063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200660034 + 200660035.

It is an arithmetic number, because the mean of its divisors is an integer number (200660035).

Almost surely, 2^401320069 is an apocalyptic number.

It is an amenable number.

401320069 is a deficient number, since it is larger than the sum of its proper divisors (1).

401320069 is an equidigital number, since it uses as much as digits as its factorization.

401320069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 401320069 is about 20032.9745419895. The cubic root of 401320069 is about 737.6159390265.

The spelling of 401320069 in words is "four hundred one million, three hundred twenty thousand, sixty-nine".