9935042738 has 4 divisors (see below), whose sum is σ = 14902564110. Its totient is φ = 4967521368.

The previous prime is 9935042731. The next prime is 9935042837. The reversal of 9935042738 is 8372405399.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 5316888889 + 4618153849 = 72917^2 + 67957^2 .

It is not an unprimeable number, because it can be changed into a prime (9935042731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2483760683 + ... + 2483760686.

Almost surely, 2^9935042738 is an apocalyptic number.

9935042738 is a deficient number, since it is larger than the sum of its proper divisors (4967521372).

9935042738 is a wasteful number, since it uses less digits than its factorization.

9935042738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967521371.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 9935042738 is about 99674.6845392550. The cubic root of 9935042738 is about 2149.7596802238.

The spelling of 9935042738 in words is "nine billion, nine hundred thirty-five million, forty-two thousand, seven hundred thirty-eight".