149945806 has 4 divisors (see below), whose sum is σ = 224918712. Its totient is φ = 74972902.

The previous prime is 149945759. The next prime is 149945821. The reversal of 149945806 is 608549941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37486450 + ... + 37486453.

It is an arithmetic number, because the mean of its divisors is an integer number (56229678).

Almost surely, 2^149945806 is an apocalyptic number.

149945806 is a deficient number, since it is larger than the sum of its proper divisors (74972906).

149945806 is an equidigital number, since it uses as much as digits as its factorization.

149945806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74972905.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 149945806 is about 12245.2360532576. The cubic root of 149945806 is about 531.2652883074.

The spelling of 149945806 in words is "one hundred forty-nine million, nine hundred forty-five thousand, eight hundred six".