89138766 has 16 divisors (see below), whose sum is σ = 187660800. Its totient is φ = 28149048.

The previous prime is 89138761. The next prime is 89138789. The reversal of 89138766 is 66783198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89138761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390846 + ... + 391073.

It is an arithmetic number, because the mean of its divisors is an integer number (11728800).

Almost surely, 2^89138766 is an apocalyptic number.

89138766 is an abundant number, since it is smaller than the sum of its proper divisors (98522034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89138766 is a wasteful number, since it uses less digits than its factorization.

89138766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781943.

The product of its digits is 435456, while the sum is 48.

The square root of 89138766 is about 9441.3328508214. The cubic root of 89138766 is about 446.7064320677.

The spelling of 89138766 in words is "eighty-nine million, one hundred thirty-eight thousand, seven hundred sixty-six".