401097019 has 2 divisors, whose sum is σ = 401097020. Its totient is φ = 401097018.

The previous prime is 401097017. The next prime is 401097071. The reversal of 401097019 is 910790104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401097019 - 2¹ = 401097017 is a prime.

It is a super-2 number, since 2×401097019² = 321757637301372722, which contains 22 as substring.

Together with 401097017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (401097017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200548509 + 200548510.

It is an arithmetic number, because the mean of its divisors is an integer number (200548510).

Almost surely, 2^401097019 is an apocalyptic number.

401097019 is a deficient number, since it is larger than the sum of its proper divisors (1).

401097019 is an equidigital number, since it uses as much as digits as its factorization.

401097019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 401097019 is about 20027.4066968242. The cubic root of 401097019 is about 737.4792603188.

The spelling of 401097019 in words is "four hundred one million, ninety-seven thousand, nineteen".