149947873 has 2 divisors, whose sum is σ = 149947874. Its totient is φ = 149947872.

The previous prime is 149947859. The next prime is 149947901. The reversal of 149947873 is 378749941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149010849 + 937024 = 12207^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 149947873 - 2⁵ = 149947841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149947873.

It is not a weakly prime, because it can be changed into another prime (149947073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74973936 + 74973937.

It is an arithmetic number, because the mean of its divisors is an integer number (74973937).

Almost surely, 2^149947873 is an apocalyptic number.

It is an amenable number.

149947873 is a deficient number, since it is larger than the sum of its proper divisors (1).

149947873 is an equidigital number, since it uses as much as digits as its factorization.

149947873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 149947873 is about 12245.3204531364. The cubic root of 149947873 is about 531.2677294567.

The spelling of 149947873 in words is "one hundred forty-nine million, nine hundred forty-seven thousand, eight hundred seventy-three".