91554949 has 8 divisors (see below), whose sum is σ = 92718080. Its totient is φ = 90397296.

The previous prime is 91554941. The next prime is 91554959. The reversal of 91554949 is 94945519.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91554949 - 2³ = 91554941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91554899 and 91554908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91554941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39772 + ... + 42010.

It is an arithmetic number, because the mean of its divisors is an integer number (11589760).

Almost surely, 2^91554949 is an apocalyptic number.

It is an amenable number.

91554949 is a deficient number, since it is larger than the sum of its proper divisors (1163131).

91554949 is a wasteful number, since it uses less digits than its factorization.

91554949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 291600, while the sum is 46.

The square root of 91554949 is about 9568.4350340063. The cubic root of 91554949 is about 450.7066248017.

The spelling of 91554949 in words is "ninety-one million, five hundred fifty-four thousand, nine hundred forty-nine".