149916749 has 2 divisors, whose sum is σ = 149916750. Its totient is φ = 149916748.

The previous prime is 149916731. The next prime is 149916751. The reversal of 149916749 is 947619941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138062500 + 11854249 = 11750^2 + 3443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149916749 is a prime.

Together with 149916751, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149916697 and 149916706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149916719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74958374 + 74958375.

It is an arithmetic number, because the mean of its divisors is an integer number (74958375).

Almost surely, 2^149916749 is an apocalyptic number.

It is an amenable number.

149916749 is a deficient number, since it is larger than the sum of its proper divisors (1).

149916749 is an equidigital number, since it uses as much as digits as its factorization.

149916749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 149916749 is about 12244.0495343657. The cubic root of 149916749 is about 531.2309693021.

The spelling of 149916749 in words is "one hundred forty-nine million, nine hundred sixteen thousand, seven hundred forty-nine".