91961486 has 8 divisors (see below), whose sum is σ = 138250800. Its totient is φ = 45877888.

The previous prime is 91961479. The next prime is 91961489. The reversal of 91961486 is 68416919.

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

It is a super-3 number, since 3×91961486³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91961489) 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, 50306 + ... + 52101.

It is an arithmetic number, because the mean of its divisors is an integer number (17281350).

Almost surely, 2^91961486 is an apocalyptic number.

91961486 is a deficient number, since it is larger than the sum of its proper divisors (46289314).

91961486 is a wasteful number, since it uses less digits than its factorization.

91961486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102858.

The product of its digits is 93312, while the sum is 44.

The square root of 91961486 is about 9589.6551554266. The cubic root of 91961486 is about 451.3727398410.

The spelling of 91961486 in words is "ninety-one million, nine hundred sixty-one thousand, four hundred eighty-six".