91290149 has 8 divisors (see below), whose sum is σ = 93787008. Its totient is φ = 88806240.

The previous prime is 91290139. The next prime is 91290191. The reversal of 91290149 is 94109219.

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 91290149 - 2¹⁶ = 91224613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91290139) 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, 12014 + ... + 18080.

It is an arithmetic number, because the mean of its divisors is an integer number (11723376).

Almost surely, 2^91290149 is an apocalyptic number.

It is an amenable number.

91290149 is a deficient number, since it is larger than the sum of its proper divisors (2496859).

91290149 is a wasteful number, since it uses less digits than its factorization.

91290149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475.

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

The square root of 91290149 is about 9554.5878508704. The cubic root of 91290149 is about 450.2716861431.

The spelling of 91290149 in words is "ninety-one million, two hundred ninety thousand, one hundred forty-nine".