1401394944 has 72 divisors (see below), whose sum is σ = 3735712512. Its totient is φ = 466385920.

The previous prime is 1401394937. The next prime is 1401394957. The reversal of 1401394944 is 4494931041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698647 + ... + 700649.

It is an arithmetic number, because the mean of its divisors is an integer number (51884896).

Almost surely, 2^1401394944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401394944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867856256).

1401394944 is an abundant number, since it is smaller than the sum of its proper divisors (2334317568).

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

1401394944 is an equidigital number, since it uses as much as digits as its factorization.

1401394944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1401394944 is about 37435.2099499923. The cubic root of 1401394944 is about 1119.0603683727.

The spelling of 1401394944 in words is "one billion, four hundred one million, three hundred ninety-four thousand, nine hundred forty-four".