401273819 has 2 divisors, whose sum is σ = 401273820. Its totient is φ = 401273818.

The previous prime is 401273767. The next prime is 401273839. The reversal of 401273819 is 918372104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401273819 is a prime.

It is a super-2 number, since 2×401273819² = 322041355629689522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401273839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200636909 + 200636910.

It is an arithmetic number, because the mean of its divisors is an integer number (200636910).

Almost surely, 2^401273819 is an apocalyptic number.

401273819 is a deficient number, since it is larger than the sum of its proper divisors (1).

401273819 is an equidigital number, since it uses as much as digits as its factorization.

401273819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 401273819 is about 20031.8201619324. The cubic root of 401273819 is about 737.5876025021.

The spelling of 401273819 in words is "four hundred one million, two hundred seventy-three thousand, eight hundred nineteen".