91146877 has 8 divisors (see below), whose sum is σ = 96751800. Its totient is φ = 85569024.

The previous prime is 91146823. The next prime is 91146883. The reversal of 91146877 is 77864119.

It can be written as a sum of positive squares in 4 ways, for example, as 40081561 + 51065316 = 6331^2 + 7146^2 .

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

It is not a de Polignac number, because 91146877 - 2¹⁹ = 90622589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91146277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (12093975).

Almost surely, 2^91146877 is an apocalyptic number.

It is an amenable number.

91146877 is a deficient number, since it is larger than the sum of its proper divisors (5604923).

91146877 is a wasteful number, since it uses less digits than its factorization.

91146877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13535.

The product of its digits is 84672, while the sum is 43.

The square root of 91146877 is about 9547.0873568853. The cubic root of 91146877 is about 450.0360086412.

The spelling of 91146877 in words is "ninety-one million, one hundred forty-six thousand, eight hundred seventy-seven".