401146469 has 2 divisors, whose sum is σ = 401146470. Its totient is φ = 401146468.

The previous prime is 401146451. The next prime is 401146477. The reversal of 401146469 is 964641104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325369444 + 75777025 = 18038^2 + 8705^2 .

It is a cyclic number.

It is not a de Polignac number, because 401146469 - 2²⁴ = 384369253 is a prime.

It is a super-2 number, since 2×401146469² = 321836979182335922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401146409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200573234 + 200573235.

It is an arithmetic number, because the mean of its divisors is an integer number (200573235).

Almost surely, 2^401146469 is an apocalyptic number.

It is an amenable number.

401146469 is a deficient number, since it is larger than the sum of its proper divisors (1).

401146469 is an equidigital number, since it uses as much as digits as its factorization.

401146469 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 35.

The square root of 401146469 is about 20028.6412170172. The cubic root of 401146469 is about 737.5095662457.

The spelling of 401146469 in words is "four hundred one million, one hundred forty-six thousand, four hundred sixty-nine".