401213616 has 40 divisors (see below), whose sum is σ = 1051075584. Its totient is φ = 131853120.

The previous prime is 401213609. The next prime is 401213623. The reversal of 401213616 is 616312104.

It is an interprime number because it is at equal distance from previous prime (401213609) and next prime (401213623).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55456 + ... + 62271.

Almost surely, 2^401213616 is an apocalyptic number.

It is an amenable number.

401213616 is an abundant number, since it is smaller than the sum of its proper divisors (649861968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401213616 is a wasteful number, since it uses less digits than its factorization.

401213616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117809 (or 117803 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 401213616 is about 20030.3174213491. The cubic root of 401213616 is about 737.5507139693.

The spelling of 401213616 in words is "four hundred one million, two hundred thirteen thousand, six hundred sixteen".