9139299440 has 40 divisors (see below), whose sum is σ = 22367236560. Its totient is φ = 3463312896.

The previous prime is 9139299439. The next prime is 9139299443. The reversal of 9139299440 is 449929319.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139299443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3004829 + ... + 3007868.

It is an arithmetic number, because the mean of its divisors is an integer number (559180914).

Almost surely, 2^9139299440 is an apocalyptic number.

It is an amenable number.

9139299440 is an abundant number, since it is smaller than the sum of its proper divisors (13227937120).

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

9139299440 is a wasteful number, since it uses less digits than its factorization.

9139299440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012729 (or 6012723 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 9139299440 is about 95599.6832630736. The cubic root of 9139299440 is about 2090.7605757285.

The spelling of 9139299440 in words is "nine billion, one hundred thirty-nine million, two hundred ninety-nine thousand, four hundred forty".