401289173 has 4 divisors (see below), whose sum is σ = 401362848. Its totient is φ = 401215500.

The previous prime is 401289167. The next prime is 401289179. The reversal of 401289173 is 371982104.

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 an interprime number because it is at equal distance from previous prime (401289167) and next prime (401289179).

It is a cyclic number.

It is not a de Polignac number, because 401289173 - 2⁴ = 401289157 is a prime.

It is a super-2 number, since 2×401289173² = 322066000734047858, 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 (401289179) 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, 27953 + ... + 39798.

It is an arithmetic number, because the mean of its divisors is an integer number (100340712).

Almost surely, 2^401289173 is an apocalyptic number.

It is an amenable number.

401289173 is a deficient number, since it is larger than the sum of its proper divisors (73675).

401289173 is an equidigital number, since it uses as much as digits as its factorization.

401289173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73674.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 401289173 is about 20032.2033985281. The cubic root of 401289173 is about 737.5970098569.

The spelling of 401289173 in words is "four hundred one million, two hundred eighty-nine thousand, one hundred seventy-three".