149869729 has 2 divisors, whose sum is σ = 149869730. Its totient is φ = 149869728.

The previous prime is 149869723. The next prime is 149869747. The reversal of 149869729 is 927968941.

149869729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119399329 + 30470400 = 10927^2 + 5520^2 .

It is a cyclic number.

It is not a de Polignac number, because 149869729 - 2¹¹ = 149867681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149869729.

It is not a weakly prime, because it can be changed into another prime (149869723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74934864 + 74934865.

It is an arithmetic number, because the mean of its divisors is an integer number (74934865).

Almost surely, 2^149869729 is an apocalyptic number.

It is an amenable number.

149869729 is a deficient number, since it is larger than the sum of its proper divisors (1).

149869729 is an equidigital number, since it uses as much as digits as its factorization.

149869729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The square root of 149869729 is about 12242.1292674110. The cubic root of 149869729 is about 531.1754249367.

The spelling of 149869729 in words is "one hundred forty-nine million, eight hundred sixty-nine thousand, seven hundred twenty-nine".