91849389 has 8 divisors (see below), whose sum is σ = 125452992. Its totient is φ = 59739360.

The previous prime is 91849379. The next prime is 91849399. The reversal of 91849389 is 98394819.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91849379) and next prime (91849399).

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

It is not a de Polignac number, because 91849389 - 2¹¹ = 91847341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91849339) 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, 373249 + ... + 373494.

It is an arithmetic number, because the mean of its divisors is an integer number (15681624).

Almost surely, 2^91849389 is an apocalyptic number.

It is an amenable number.

91849389 is a deficient number, since it is larger than the sum of its proper divisors (33603603).

91849389 is a wasteful number, since it uses less digits than its factorization.

91849389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746787.

The product of its digits is 559872, while the sum is 51.

The square root of 91849389 is about 9583.8086896599. The cubic root of 91849389 is about 451.1892641097.

The spelling of 91849389 in words is "ninety-one million, eight hundred forty-nine thousand, three hundred eighty-nine".