1039940694 has 160 divisors (see below), whose sum is σ = 2745743616. Its totient is φ = 291133440.

The previous prime is 1039940689. The next prime is 1039940773. The reversal of 1039940694 is 4960499301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1109394 + ... + 1110330.

Almost surely, 2^1039940694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1039940694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372871808).

1039940694 is an abundant number, since it is smaller than the sum of its proper divisors (1705802922).

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

1039940694 is a wasteful number, since it uses less digits than its factorization.

1039940694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1039940694 is about 32248.1114795890. Note that the first 3 decimals coincide. The cubic root of 1039940694 is about 1013.1401449824.

The spelling of 1039940694 in words is "one billion, thirty-nine million, nine hundred forty thousand, six hundred ninety-four".