149729873 has 2 divisors, whose sum is σ = 149729874. Its totient is φ = 149729872.

The previous prime is 149729849. The next prime is 149729891. The reversal of 149729873 is 378927941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106853569 + 42876304 = 10337^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 149729873 - 2⁶ = 149729809 is a prime.

It is a super-2 number, since 2×149729873² = 44838069737192258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149729803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74864936 + 74864937.

It is an arithmetic number, because the mean of its divisors is an integer number (74864937).

Almost surely, 2^149729873 is an apocalyptic number.

It is an amenable number.

149729873 is a deficient number, since it is larger than the sum of its proper divisors (1).

149729873 is an equidigital number, since it uses as much as digits as its factorization.

149729873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 50.

The square root of 149729873 is about 12236.4158559604. The cubic root of 149729873 is about 531.0101454173.

The spelling of 149729873 in words is "one hundred forty-nine million, seven hundred twenty-nine thousand, eight hundred seventy-three".