90839929047 has 12 divisors (see below), whose sum is σ = 140894584056. Its totient is φ = 51908530800.

The previous prime is 90839929039. The next prime is 90839929049. The reversal of 90839929047 is 74092993809.

It is not a de Polignac number, because 90839929047 - 2³ = 90839929039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90839929049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308979204 + ... + 308979497.

It is an arithmetic number, because the mean of its divisors is an integer number (11741215338).

Almost surely, 2^90839929047 is an apocalyptic number.

90839929047 is a deficient number, since it is larger than the sum of its proper divisors (50054655009).

90839929047 is a wasteful number, since it uses less digits than its factorization.

90839929047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617958718 (or 617958711 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 90839929047 in words is "ninety billion, eight hundred thirty-nine million, nine hundred twenty-nine thousand, forty-seven".