1011940039 has 8 divisors (see below), whose sum is σ = 1151932032. Its totient is φ = 879947640.

The previous prime is 1011940009. The next prime is 1011940063. The reversal of 1011940039 is 9300491101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011940039 - 2⁹ = 1011939527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011939989 and 1011940016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011940009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999629 + ... + 2000134.

It is an arithmetic number, because the mean of its divisors is an integer number (143991504).

Almost surely, 2^1011940039 is an apocalyptic number.

1011940039 is a deficient number, since it is larger than the sum of its proper divisors (139991993).

1011940039 is a wasteful number, since it uses less digits than its factorization.

1011940039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999797.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1011940039 is about 31811.0049982706. The cubic root of 1011940039 is about 1003.9642767431.

The spelling of 1011940039 in words is "one billion, eleven million, nine hundred forty thousand, thirty-nine".