139264305 has 16 divisors (see below), whose sum is σ = 222994944. Its totient is φ = 74216960.

The previous prime is 139264303. The next prime is 139264309. The reversal of 139264305 is 503462931.

It is not a de Polignac number, because 139264305 - 2¹ = 139264303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139264303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22720 + ... + 28190.

It is an arithmetic number, because the mean of its divisors is an integer number (13937184).

Almost surely, 2^139264305 is an apocalyptic number.

139264305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139264305 is a deficient number, since it is larger than the sum of its proper divisors (83730639).

139264305 is a wasteful number, since it uses less digits than its factorization.

139264305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 139264305 is about 11801.0298279430. The cubic root of 139264305 is about 518.3382666055.

The spelling of 139264305 in words is "one hundred thirty-nine million, two hundred sixty-four thousand, three hundred five".