87969790 has 16 divisors (see below), whose sum is σ = 158455440. Its totient is φ = 35163520.

The previous prime is 87969743. The next prime is 87969799. The reversal of 87969790 is 9796978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87969799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21510 + ... + 25270.

It is an arithmetic number, because the mean of its divisors is an integer number (9903465).

Almost surely, 2^87969790 is an apocalyptic number.

87969790 is a deficient number, since it is larger than the sum of its proper divisors (70485650).

87969790 is a wasteful number, since it uses less digits than its factorization.

87969790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6107.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 87969790 is about 9379.2211830194. The cubic root of 87969790 is about 444.7451134712.

The spelling of 87969790 in words is "eighty-seven million, nine hundred sixty-nine thousand, seven hundred ninety".