139347066 has 16 divisors (see below), whose sum is σ = 279703584. Its totient is φ = 46280784.

The previous prime is 139347053. The next prime is 139347107. The reversal of 139347066 is 660743931.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40260 + ... + 43583.

It is an arithmetic number, because the mean of its divisors is an integer number (17481474).

Almost surely, 2^139347066 is an apocalyptic number.

139347066 is an abundant number, since it is smaller than the sum of its proper divisors (140356518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139347066 is a wasteful number, since it uses less digits than its factorization.

139347066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84125.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 139347066 is about 11804.5358231487. The cubic root of 139347066 is about 518.4409243979.

The spelling of 139347066 in words is "one hundred thirty-nine million, three hundred forty-seven thousand, sixty-six".