401320919 has 8 divisors (see below), whose sum is σ = 404941632. Its totient is φ = 397716480.

The previous prime is 401320903. The next prime is 401320957. The reversal of 401320919 is 919023104.

It is a happy number.

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 401320919 - 2⁴ = 401320903 is a prime.

It is a super-2 number, since 2×401320919² = 322116960054009122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401320891 and 401320900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401320979) 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, 48467 + ... + 56139.

It is an arithmetic number, because the mean of its divisors is an integer number (50617704).

Almost surely, 2^401320919 is an apocalyptic number.

401320919 is a deficient number, since it is larger than the sum of its proper divisors (3620713).

401320919 is a wasteful number, since it uses less digits than its factorization.

401320919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8137.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 401320919 is about 20032.9957570005. The cubic root of 401320919 is about 737.6164597855.

The spelling of 401320919 in words is "four hundred one million, three hundred twenty thousand, nine hundred nineteen".