401151996 has 36 divisors (see below), whose sum is σ = 1158884272. Its totient is φ = 114614784.

The previous prime is 401151991. The next prime is 401152007. The reversal of 401151996 is 699151104.

401151996 is a `hidden beast` number, since 40 + 11 + 519 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 401151996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401151991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 795685 + ... + 796188.

Almost surely, 2^401151996 is an apocalyptic number.

It is an amenable number.

401151996 is an abundant number, since it is smaller than the sum of its proper divisors (757732276).

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

401151996 is a wasteful number, since it uses less digits than its factorization.

401151996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591890 (or 1591885 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 401151996 is about 20028.7791939499. The cubic root of 401151996 is about 737.5129533682.

The spelling of 401151996 in words is "four hundred one million, one hundred fifty-one thousand, nine hundred ninety-six".