91950679 has 4 divisors (see below), whose sum is σ = 92084440. Its totient is φ = 91816920.

The previous prime is 91950673. The next prime is 91950697. The reversal of 91950679 is 97605919.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91950679 is a prime.

It is a super-2 number, since 2×91950679² = 16909854737122082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91950673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65844 + ... + 67225.

It is an arithmetic number, because the mean of its divisors is an integer number (23021110).

Almost surely, 2^91950679 is an apocalyptic number.

91950679 is a deficient number, since it is larger than the sum of its proper divisors (133761).

91950679 is a wasteful number, since it uses less digits than its factorization.

91950679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133760.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 91950679 is about 9589.0916670976. The cubic root of 91950679 is about 451.3550578870.

It can be divided in two parts, 91950 and 679, that added together give a palindrome (92629).

The spelling of 91950679 in words is "ninety-one million, nine hundred fifty thousand, six hundred seventy-nine".