149402865 has 16 divisors (see below), whose sum is σ = 239205888. Its totient is φ = 79627776.

The previous prime is 149402843. The next prime is 149402879. The reversal of 149402865 is 568204941.

It is not a de Polignac number, because 149402865 - 2⁹ = 149402353 is a prime.

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, 30849 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (14950368).

Almost surely, 2^149402865 is an apocalyptic number.

149402865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149402865 is a deficient number, since it is larger than the sum of its proper divisors (89803023).

149402865 is a wasteful number, since it uses less digits than its factorization.

149402865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 149402865 is about 12223.0464696818. The cubic root of 149402865 is about 530.6232906808.

The spelling of 149402865 in words is "one hundred forty-nine million, four hundred two thousand, eight hundred sixty-five".