149923559 has 2 divisors, whose sum is σ = 149923560. Its totient is φ = 149923558.

The previous prime is 149923523. The next prime is 149923577. The reversal of 149923559 is 955329941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149923559 - 2⁸ = 149923303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149923589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74961779 + 74961780.

It is an arithmetic number, because the mean of its divisors is an integer number (74961780).

Almost surely, 2^149923559 is an apocalyptic number.

149923559 is a deficient number, since it is larger than the sum of its proper divisors (1).

149923559 is an equidigital number, since it uses as much as digits as its factorization.

149923559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 47.

The square root of 149923559 is about 12244.3276254762. The cubic root of 149923559 is about 531.2390129400.

The spelling of 149923559 in words is "one hundred forty-nine million, nine hundred twenty-three thousand, five hundred fifty-nine".