139084761 has 4 divisors (see below), whose sum is σ = 185446352. Its totient is φ = 92723172.

The previous prime is 139084733. The next prime is 139084801. The reversal of 139084761 is 167480931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 139084761 - 2⁹ = 139084249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139084721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23180791 + ... + 23180796.

It is an arithmetic number, because the mean of its divisors is an integer number (46361588).

Almost surely, 2^139084761 is an apocalyptic number.

It is an amenable number.

139084761 is a deficient number, since it is larger than the sum of its proper divisors (46361591).

139084761 is an equidigital number, since it uses as much as digits as its factorization.

139084761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46361590.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 139084761 is about 11793.4202418128. The cubic root of 139084761 is about 518.1154180482.

The spelling of 139084761 in words is "one hundred thirty-nine million, eighty-four thousand, seven hundred sixty-one".