1394440964 has 48 divisors (see below), whose sum is σ = 2942956800. Its totient is φ = 565188096.

The previous prime is 1394440961. The next prime is 1394440969. The reversal of 1394440964 is 4690444931.

It is not an unprimeable number, because it can be changed into a prime (1394440961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45152 + ... + 69480.

It is an arithmetic number, because the mean of its divisors is an integer number (61311600).

Almost surely, 2^1394440964 is an apocalyptic number.

1394440964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1394440964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471478400).

1394440964 is an abundant number, since it is smaller than the sum of its proper divisors (1548515836).

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

1394440964 is a wasteful number, since it uses less digits than its factorization.

1394440964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24452 (or 24450 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 1394440964 is about 37342.2142353664. The cubic root of 1394440964 is about 1117.2063036458.

The spelling of 1394440964 in words is "one billion, three hundred ninety-four million, four hundred forty thousand, nine hundred sixty-four".