9951142039 has 4 divisors (see below), whose sum is σ = 9952712800. Its totient is φ = 9949571280.

The previous prime is 9951142007. The next prime is 9951142043. The reversal of 9951142039 is 9302411599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9951142039 - 2⁵ = 9951142007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9951141986 and 9951142004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9951142079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775839 + ... + 788560.

It is an arithmetic number, because the mean of its divisors is an integer number (2488178200).

Almost surely, 2^9951142039 is an apocalyptic number.

9951142039 is a deficient number, since it is larger than the sum of its proper divisors (1570761).

9951142039 is a wasteful number, since it uses less digits than its factorization.

9951142039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570760.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9951142039 is about 99755.4110762920. The cubic root of 9951142039 is about 2150.9202506555.

The spelling of 9951142039 in words is "nine billion, nine hundred fifty-one million, one hundred forty-two thousand, thirty-nine".