149944859 has 4 divisors (see below), whose sum is σ = 149987040. Its totient is φ = 149902680.

The previous prime is 149944853. The next prime is 149944867. The reversal of 149944859 is 958449941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958449941 = 67 ⋅14305223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149944859 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 149944859.

It is not an unprimeable number, because it can be changed into a prime (149944853) 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, 15212 + ... + 23049.

It is an arithmetic number, because the mean of its divisors is an integer number (37496760).

Almost surely, 2^149944859 is an apocalyptic number.

149944859 is a deficient number, since it is larger than the sum of its proper divisors (42181).

149944859 is an equidigital number, since it uses as much as digits as its factorization.

149944859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42180.

The product of its digits is 1866240, while the sum is 53.

The square root of 149944859 is about 12245.1973850976. The cubic root of 149944859 is about 531.2641698827.

The spelling of 149944859 in words is "one hundred forty-nine million, nine hundred forty-four thousand, eight hundred fifty-nine".