344391894 has 144 divisors (see below), whose sum is σ = 958557600. Its totient is φ = 89258400.

The previous prime is 344391877. The next prime is 344391911. The reversal of 344391894 is 498193443.

It is a happy number.

344391894 is a `hidden beast` number, since 34 + 439 + 189 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (344391877) and next prime (344391911).

Its product of digits (373248) is a multiple of the sum of its prime factors (512).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 746824 + ... + 747284.

It is an arithmetic number, because the mean of its divisors is an integer number (6656650).

Almost surely, 2^344391894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344391894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479278800).

344391894 is an abundant number, since it is smaller than the sum of its proper divisors (614165706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

344391894 is a wasteful number, since it uses less digits than its factorization.

344391894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 484 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 344391894 is about 18557.7987379969. The cubic root of 344391894 is about 700.9455887514.

The spelling of 344391894 in words is "three hundred forty-four million, three hundred ninety-one thousand, eight hundred ninety-four".