401982803 has 2 divisors, whose sum is σ = 401982804. Its totient is φ = 401982802.

The previous prime is 401982769. The next prime is 401982817. The reversal of 401982803 is 308289104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401982803 - 2²² = 397788499 is a prime.

It is not a weakly prime, because it can be changed into another prime (401982853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200991401 + 200991402.

It is an arithmetic number, because the mean of its divisors is an integer number (200991402).

Almost surely, 2^401982803 is an apocalyptic number.

401982803 is a deficient number, since it is larger than the sum of its proper divisors (1).

401982803 is an equidigital number, since it uses as much as digits as its factorization.

401982803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 401982803 is about 20049.5087969756. The cubic root of 401982803 is about 738.0217450623.

The spelling of 401982803 in words is "four hundred one million, nine hundred eighty-two thousand, eight hundred three".