1039945326 has 48 divisors (see below), whose sum is σ = 2423439360. Its totient is φ = 296639280.

The previous prime is 1039945321. The next prime is 1039945327. The reversal of 1039945326 is 6235499301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1039945321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200595 + ... + 205713.

It is an arithmetic number, because the mean of its divisors is an integer number (50488320).

Almost surely, 2^1039945326 is an apocalyptic number.

1039945326 is an abundant number, since it is smaller than the sum of its proper divisors (1383494034).

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

1039945326 is a wasteful number, since it uses less digits than its factorization.

1039945326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5829 (or 5822 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 1039945326 is about 32248.1832976681. The cubic root of 1039945326 is about 1013.1416491894.

The spelling of 1039945326 in words is "one billion, thirty-nine million, nine hundred forty-five thousand, three hundred twenty-six".