401465621 has 8 divisors (see below), whose sum is σ = 419570304. Its totient is φ = 383415120.

The previous prime is 401465599. The next prime is 401465627. The reversal of 401465621 is 126564104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401465621 - 2¹⁸ = 401203477 is a prime.

It is a super-2 number, since 2×401465621² = 322349289689831282, 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 (401465627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (52446288).

Almost surely, 2^401465621 is an apocalyptic number.

It is an amenable number.

401465621 is a deficient number, since it is larger than the sum of its proper divisors (18104683).

401465621 is a wasteful number, since it uses less digits than its factorization.

401465621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27091.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 401465621 is about 20036.6070231464. The cubic root of 401465621 is about 737.7051018557.

The spelling of 401465621 in words is "four hundred one million, four hundred sixty-five thousand, six hundred twenty-one".