401646351 has 8 divisors (see below), whose sum is σ = 536086144. Its totient is φ = 267485400.

The previous prime is 401646341. The next prime is 401646367. The reversal of 401646351 is 153646104.

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

It is not a de Polignac number, because 401646351 - 2¹⁴ = 401629967 is a prime.

It is a super-2 number, since 2×401646351² = 322639582543230402, 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 (401646331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66325 + ... + 72126.

It is an arithmetic number, because the mean of its divisors is an integer number (67010768).

Almost surely, 2^401646351 is an apocalyptic number.

401646351 is a deficient number, since it is larger than the sum of its proper divisors (134439793).

401646351 is a wasteful number, since it uses less digits than its factorization.

401646351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139421.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 401646351 is about 20041.1165108135. The cubic root of 401646351 is about 737.8157841778.

The spelling of 401646351 in words is "four hundred one million, six hundred forty-six thousand, three hundred fifty-one".