401374249 has 2 divisors, whose sum is σ = 401374250. Its totient is φ = 401374248.

The previous prime is 401374231. The next prime is 401374279. The reversal of 401374249 is 942473104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380835225 + 20539024 = 19515^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 401374249 - 2¹⁵ = 401341481 is a prime.

It is a super-2 number, since 2×401374249² = 322202575520628002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401374279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200687124 + 200687125.

It is an arithmetic number, because the mean of its divisors is an integer number (200687125).

Almost surely, 2^401374249 is an apocalyptic number.

It is an amenable number.

401374249 is a deficient number, since it is larger than the sum of its proper divisors (1).

401374249 is an equidigital number, since it uses as much as digits as its factorization.

401374249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 401374249 is about 20034.3267668270. The cubic root of 401374249 is about 737.6491313471.

The spelling of 401374249 in words is "four hundred one million, three hundred seventy-four thousand, two hundred forty-nine".