1393454944 has 36 divisors (see below), whose sum is σ = 3191264244. Its totient is φ = 597194304.

The previous prime is 1393454941. The next prime is 1393454957. The reversal of 1393454944 is 4494543931.

It is a junction number, because it is equal to n+sod(n) for n = 1393454894 and 1393454903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393454941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 442774 + ... + 445909.

It is an arithmetic number, because the mean of its divisors is an integer number (88646229).

Almost surely, 2^1393454944 is an apocalyptic number.

1393454944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1393454944 is an abundant number, since it is smaller than the sum of its proper divisors (1797809300).

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

1393454944 is an equidigital number, since it uses as much as digits as its factorization.

1393454944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888707 (or 888692 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 1393454944 is about 37329.0094162703. The cubic root of 1393454944 is about 1116.9429131457.

The spelling of 1393454944 in words is "one billion, three hundred ninety-three million, four hundred fifty-four thousand, nine hundred forty-four".