1394039808 has 330 divisors, whose sum is σ = 4856646696. Its totient is φ = 398297088.

The previous prime is 1394039789. The next prime is 1394039809. The reversal of 1394039808 is 8089304931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394039809) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 199148541 + ... + 199148547.

Almost surely, 2^1394039808 is an apocalyptic number.

1394039808 is a gapful number since it is divisible by the number (18) 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 1394039808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428323348).

1394039808 is an abundant number, since it is smaller than the sum of its proper divisors (3462606888).

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

1394039808 is an frugal number, since it uses more digits than its factorization.

1394039808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1394039808 is about 37336.8425017435. The cubic root of 1394039808 is about 1117.0991598734.

The spelling of 1394039808 in words is "one billion, three hundred ninety-four million, thirty-nine thousand, eight hundred eight".