91140929 has 8 divisors (see below), whose sum is σ = 104659680. Its totient is φ = 78494400.

The previous prime is 91140919. The next prime is 91140937. The reversal of 91140929 is 92904119.

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 91140929 - 2¹⁶ = 91075393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91140919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217832 + ... + 218249.

It is an arithmetic number, because the mean of its divisors is an integer number (13082460).

Almost surely, 2^91140929 is an apocalyptic number.

It is an amenable number.

91140929 is a deficient number, since it is larger than the sum of its proper divisors (13518751).

91140929 is a wasteful number, since it uses less digits than its factorization.

91140929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436111.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 91140929 is about 9546.7758431839. The cubic root of 91140929 is about 450.0262190485.

The spelling of 91140929 in words is "ninety-one million, one hundred forty thousand, nine hundred twenty-nine".