91673122 has 4 divisors (see below), whose sum is σ = 137509686. Its totient is φ = 45836560.

The previous prime is 91673117. The next prime is 91673123. The reversal of 91673122 is 22137619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22137619 = 7 ⋅3162517.

It can be written as a sum of positive squares in only one way, i.e., 62394201 + 29278921 = 7899^2 + 5411^2 .

It is a super-2 number, since 2×91673122² = 16807922594453768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91673123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22918279 + ... + 22918282.

Almost surely, 2^91673122 is an apocalyptic number.

91673122 is a deficient number, since it is larger than the sum of its proper divisors (45836564).

91673122 is a wasteful number, since it uses less digits than its factorization.

91673122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45836563.

The product of its digits is 4536, while the sum is 31.

The square root of 91673122 is about 9574.6081904170. The cubic root of 91673122 is about 450.9004554123.

The spelling of 91673122 in words is "ninety-one million, six hundred seventy-three thousand, one hundred twenty-two".