401066869 has 4 divisors (see below), whose sum is σ = 458362144. Its totient is φ = 343771596.

The previous prime is 401066851. The next prime is 401066903. The reversal of 401066869 is 968660104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 401066869 - 2¹³ = 401058677 is a prime.

It is a super-2 number, since 2×401066869² = 321709266818926322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401066069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28647627 + ... + 28647640.

It is an arithmetic number, because the mean of its divisors is an integer number (114590536).

Almost surely, 2^401066869 is an apocalyptic number.

It is an amenable number.

401066869 is a deficient number, since it is larger than the sum of its proper divisors (57295275).

401066869 is an equidigital number, since it uses as much as digits as its factorization.

401066869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57295274.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 401066869 is about 20026.6539641549. The cubic root of 401066869 is about 737.4607813675.

The spelling of 401066869 in words is "four hundred one million, sixty-six thousand, eight hundred sixty-nine".