401311849 has 2 divisors, whose sum is σ = 401311850. Its totient is φ = 401311848.

The previous prime is 401311847. The next prime is 401311853. The reversal of 401311849 is 948113104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382476249 + 18835600 = 19557^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 401311849 - 2¹ = 401311847 is a prime.

It is a super-2 number, since 2×401311849² = 322102400295597602, which contains 22 as substring.

Together with 401311847, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401311849.

It is not a weakly prime, because it can be changed into another prime (401311847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200655924 + 200655925.

It is an arithmetic number, because the mean of its divisors is an integer number (200655925).

Almost surely, 2^401311849 is an apocalyptic number.

It is an amenable number.

401311849 is a deficient number, since it is larger than the sum of its proper divisors (1).

401311849 is an equidigital number, since it uses as much as digits as its factorization.

401311849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 401311849 is about 20032.7693791947. The cubic root of 401311849 is about 737.6109029427.

The spelling of 401311849 in words is "four hundred one million, three hundred eleven thousand, eight hundred forty-nine".