149905529 has 4 divisors (see below), whose sum is σ = 150475776. Its totient is φ = 149335284.

The previous prime is 149905499. The next prime is 149905531. The reversal of 149905529 is 925509941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149905529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149905529.

It is not an unprimeable number, because it can be changed into a prime (149905549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284729 + ... + 285254.

It is an arithmetic number, because the mean of its divisors is an integer number (37618944).

Almost surely, 2^149905529 is an apocalyptic number.

It is an amenable number.

149905529 is a deficient number, since it is larger than the sum of its proper divisors (570247).

149905529 is an equidigital number, since it uses as much as digits as its factorization.

149905529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570246.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 149905529 is about 12243.5913440461. The cubic root of 149905529 is about 531.2177162573.

The spelling of 149905529 in words is "one hundred forty-nine million, nine hundred five thousand, five hundred twenty-nine".