401797919 has 8 divisors (see below), whose sum is σ = 403843440. Its totient is φ = 399758400.

The previous prime is 401797853. The next prime is 401797931. The reversal of 401797919 is 919797104.

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 401797919 - 2¹² = 401793823 is a prime.

It is a super-2 number, since 2×401797919² = 322883135425461122, 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 (401797969) 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, 187484 + ... + 189614.

It is an arithmetic number, because the mean of its divisors is an integer number (50480430).

Almost surely, 2^401797919 is an apocalyptic number.

401797919 is a deficient number, since it is larger than the sum of its proper divisors (2045521).

401797919 is a wasteful number, since it uses less digits than its factorization.

401797919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 401797919 is about 20044.8975801823. The cubic root of 401797919 is about 737.9085815674.

The spelling of 401797919 in words is "four hundred one million, seven hundred ninety-seven thousand, nine hundred nineteen".