91989062 has 8 divisors (see below), whose sum is σ = 150527592. Its totient is φ = 41813200.

The previous prime is 91989019. The next prime is 91989103. The reversal of 91989062 is 26098919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090639 + ... + 2090682.

It is an arithmetic number, because the mean of its divisors is an integer number (18815949).

Almost surely, 2^91989062 is an apocalyptic number.

91989062 is a deficient number, since it is larger than the sum of its proper divisors (58538530).

91989062 is a wasteful number, since it uses less digits than its factorization.

91989062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181334.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 91989062 is about 9591.0928470118. The cubic root of 91989062 is about 451.4178522435.

The spelling of 91989062 in words is "ninety-one million, nine hundred eighty-nine thousand, sixty-two".