401146623 has 6 divisors (see below), whose sum is σ = 579434024. Its totient is φ = 267431076.

The previous prime is 401146619. The next prime is 401146643. The reversal of 401146623 is 326641104.

It is not a de Polignac number, because 401146623 - 2² = 401146619 is a prime.

It is a super-2 number, since 2×401146623² = 321837226288608258, 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 (401146643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22285915 + ... + 22285932.

Almost surely, 2^401146623 is an apocalyptic number.

401146623 is a deficient number, since it is larger than the sum of its proper divisors (178287401).

401146623 is a wasteful number, since it uses less digits than its factorization.

401146623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44571853 (or 44571850 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 401146623 is about 20028.6450615113. The cubic root of 401146623 is about 737.5096606223.

Adding to 401146623 its reverse (326641104), we get a palindrome (727787727).

The spelling of 401146623 in words is "four hundred one million, one hundred forty-six thousand, six hundred twenty-three".