244001391 has 8 divisors (see below), whose sum is σ = 344472624. Its totient is φ = 153098880.

The previous prime is 244001377. The next prime is 244001399. The reversal of 244001391 is 193100442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 244001391 - 2¹⁸ = 243739247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244001399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2392120 + ... + 2392221.

It is an arithmetic number, because the mean of its divisors is an integer number (43059078).

Almost surely, 2^244001391 is an apocalyptic number.

244001391 is a deficient number, since it is larger than the sum of its proper divisors (100471233).

244001391 is a wasteful number, since it uses less digits than its factorization.

244001391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784361.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 244001391 is about 15620.5438765748. The cubic root of 244001391 is about 624.8811643931.

The spelling of 244001391 in words is "two hundred forty-four million, one thousand, three hundred ninety-one".