149428867 has 4 divisors (see below), whose sum is σ = 170775856. Its totient is φ = 128081880.

The previous prime is 149428859. The next prime is 149428871. The reversal of 149428867 is 768824941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768824941 = 7879 ⋅97579.

It is a cyclic number.

It is not a de Polignac number, because 149428867 - 2³ = 149428859 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 149428867.

It is not an unprimeable number, because it can be changed into a prime (149428847) 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 in 3 ways as a sum of consecutive naturals, for example, 10673484 + ... + 10673497.

It is an arithmetic number, because the mean of its divisors is an integer number (42693964).

Almost surely, 2^149428867 is an apocalyptic number.

149428867 is a deficient number, since it is larger than the sum of its proper divisors (21346989).

149428867 is an equidigital number, since it uses as much as digits as its factorization.

149428867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346988.

The product of its digits is 774144, while the sum is 49.

The square root of 149428867 is about 12224.1100698578. The cubic root of 149428867 is about 530.6540720327.

The spelling of 149428867 in words is "one hundred forty-nine million, four hundred twenty-eight thousand, eight hundred sixty-seven".