149091844 has 18 divisors (see below), whose sum is σ = 286787102. Its totient is φ = 67768800.

The previous prime is 149091829. The next prime is 149091851. The reversal of 149091844 is 448190941.

It can be written as a sum of positive squares in only one way, i.e., 149084100 + 7744 = 12210^2 + 88^2 .

It is a junction number, because it is equal to n+sod(n) for n = 149091797 and 149091806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153537 + ... + 154504.

Almost surely, 2^149091844 is an apocalyptic number.

It is an amenable number.

149091844 is a deficient number, since it is larger than the sum of its proper divisors (137695258).

149091844 is a wasteful number, since it uses less digits than its factorization.

149091844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308067 (or 308054 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 149091844 is about 12210.3171129992. The cubic root of 149091844 is about 530.2548246539.

The spelling of 149091844 in words is "one hundred forty-nine million, ninety-one thousand, eight hundred forty-four".