4001369 has 2 divisors, whose sum is σ = 4001370. Its totient is φ = 4001368.

The previous prime is 4001357. The next prime is 4001383. The reversal of 4001369 is 9631004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 1369 = 2000^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001369 - 2²⁰ = 2952793 is a prime.

It is a super-2 number, since 2×4001369² = 32021907748322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4001339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000684 + 2000685.

It is an arithmetic number, because the mean of its divisors is an integer number (2000685).

Almost surely, 2^4001369 is an apocalyptic number.

It is an amenable number.

4001369 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001369 is an equidigital number, since it uses as much as digits as its factorization.

4001369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 4001369 is about 2000.3422207212. The cubic root of 4001369 is about 158.7582127315.

It can be divided in two parts, 400 and 1369, that multiplied together give a square (547600 = 740²).

The spelling of 4001369 in words is "four million, one thousand, three hundred sixty-nine".