401996897 has 8 divisors (see below), whose sum is σ = 413127336. Its totient is φ = 390880512.

The previous prime is 401996887. The next prime is 401996899. The reversal of 401996897 is 798699104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40844881 + 361152016 = 6391^2 + 19004^2 .

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 401996897 - 2²⁰ = 400948321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401996899) 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 7 ways as a sum of consecutive naturals, for example, 83993 + ... + 88649.

It is an arithmetic number, because the mean of its divisors is an integer number (51640917).

Almost surely, 2^401996897 is an apocalyptic number.

It is an amenable number.

401996897 is a deficient number, since it is larger than the sum of its proper divisors (11130439).

401996897 is a wasteful number, since it uses less digits than its factorization.

401996897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 401996897 is about 20049.8602738273. The cubic root of 401996897 is about 738.0303702712.

The spelling of 401996897 in words is "four hundred one million, nine hundred ninety-six thousand, eight hundred ninety-seven".