981339535 has 32 divisors (see below), whose sum is σ = 1372852800. Its totient is φ = 665487360.

The previous prime is 981339529. The next prime is 981339547. The reversal of 981339535 is 535933189.

It is not a de Polignac number, because 981339535 - 2¹⁷ = 981208463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97101 + ... + 106729.

It is an arithmetic number, because the mean of its divisors is an integer number (42901650).

Almost surely, 2^981339535 is an apocalyptic number.

981339535 is a deficient number, since it is larger than the sum of its proper divisors (391513265).

981339535 is a wasteful number, since it uses less digits than its factorization.

981339535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9771.

The product of its digits is 437400, while the sum is 46.

The square root of 981339535 is about 31326.3393169390. The cubic root of 981339535 is about 993.7407485130.

The spelling of 981339535 in words is "nine hundred eighty-one million, three hundred thirty-nine thousand, five hundred thirty-five".