149392905 has 16 divisors (see below), whose sum is σ = 239181120. Its totient is φ = 79625408.

The previous prime is 149392847. The next prime is 149392921. The reversal of 149392905 is 509293941.

It is a cyclic number.

It is not a de Polignac number, because 149392905 - 2⁹ = 149392393 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40519 + ... + 44051.

It is an arithmetic number, because the mean of its divisors is an integer number (14948820).

Almost surely, 2^149392905 is an apocalyptic number.

149392905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149392905 is a deficient number, since it is larger than the sum of its proper divisors (89788215).

149392905 is a wasteful number, since it uses less digits than its factorization.

149392905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 149392905 is about 12222.6390358220. The cubic root of 149392905 is about 530.6114990162.

The spelling of 149392905 in words is "one hundred forty-nine million, three hundred ninety-two thousand, nine hundred five".