91921102 has 16 divisors (see below), whose sum is σ = 169700832. Its totient is φ = 36364320.

The previous prime is 91921051. The next prime is 91921103. The reversal of 91921102 is 20112919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91921103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252349 + ... + 252712.

It is an arithmetic number, because the mean of its divisors is an integer number (10606302).

Almost surely, 2^91921102 is an apocalyptic number.

91921102 is a deficient number, since it is larger than the sum of its proper divisors (77779730).

91921102 is a wasteful number, since it uses less digits than its factorization.

91921102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505083.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 91921102 is about 9587.5493219070. The cubic root of 91921102 is about 451.3066581713.

The spelling of 91921102 in words is "ninety-one million, nine hundred twenty-one thousand, one hundred two".