149293091 has 2 divisors, whose sum is σ = 149293092. Its totient is φ = 149293090.

The previous prime is 149293061. The next prime is 149293093. The reversal of 149293091 is 190392941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149293091 is a prime.

Together with 149293093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149293093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74646545 + 74646546.

It is an arithmetic number, because the mean of its divisors is an integer number (74646546).

Almost surely, 2^149293091 is an apocalyptic number.

149293091 is a deficient number, since it is larger than the sum of its proper divisors (1).

149293091 is an equidigital number, since it uses as much as digits as its factorization.

149293091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 149293091 is about 12218.5551928205. Note that the first 3 decimals coincide. The cubic root of 149293091 is about 530.4933000611.

The spelling of 149293091 in words is "one hundred forty-nine million, two hundred ninety-three thousand, ninety-one".