149079805 has 16 divisors (see below), whose sum is σ = 208627200. Its totient is φ = 102224976.

The previous prime is 149079787. The next prime is 149079811. The reversal of 149079805 is 508970941.

It is not a de Polignac number, because 149079805 - 2¹¹ = 149077757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41749 + ... + 45178.

It is an arithmetic number, because the mean of its divisors is an integer number (13039200).

Almost surely, 2^149079805 is an apocalyptic number.

It is an amenable number.

149079805 is a deficient number, since it is larger than the sum of its proper divisors (59547395).

149079805 is an frugal number, since it uses more digits than its factorization.

149079805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86953 (or 86939 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 149079805 is about 12209.8241183074. The cubic root of 149079805 is about 530.2405517746.

The spelling of 149079805 in words is "one hundred forty-nine million, seventy-nine thousand, eight hundred five".