149999497 has 2 divisors, whose sum is σ = 149999498. Its totient is φ = 149999496.

The previous prime is 149999489. The next prime is 149999501. The reversal of 149999497 is 794999941.

It is a happy number.

149999497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119705481 + 30294016 = 10941^2 + 5504^2 .

It is an emirp because it is prime and its reverse (794999941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149999497 - 2³ = 149999489 is a prime.

It is not a weakly prime, because it can be changed into another prime (149999797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74999748 + 74999749.

It is an arithmetic number, because the mean of its divisors is an integer number (74999749).

Almost surely, 2^149999497 is an apocalyptic number.

It is an amenable number.

149999497 is a deficient number, since it is larger than the sum of its proper divisors (1).

149999497 is an equidigital number, since it uses as much as digits as its factorization.

149999497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488, while the sum is 61.

The square root of 149999497 is about 12247.4281790097. The cubic root of 149999497 is about 531.3286906826.

The spelling of 149999497 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, four hundred ninety-seven".