149398523 has 2 divisors, whose sum is σ = 149398524. Its totient is φ = 149398522.

The previous prime is 149398507. The next prime is 149398541. The reversal of 149398523 is 325893941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149398523 - 2⁴ = 149398507 is a prime.

It is not a weakly prime, because it can be changed into another prime (149398553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74699261 + 74699262.

It is an arithmetic number, because the mean of its divisors is an integer number (74699262).

Almost surely, 2^149398523 is an apocalyptic number.

149398523 is a deficient number, since it is larger than the sum of its proper divisors (1).

149398523 is an equidigital number, since it uses as much as digits as its factorization.

149398523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 149398523 is about 12222.8688530966. The cubic root of 149398523 is about 530.6181502425.

The spelling of 149398523 in words is "one hundred forty-nine million, three hundred ninety-eight thousand, five hundred twenty-three".