139734765 has 48 divisors (see below), whose sum is σ = 252972720. Its totient is φ = 71285760.

The previous prime is 139734743. The next prime is 139734767. The reversal of 139734765 is 567437931.

139734765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 32114889 + 107619876 = 5667^2 + 10374^2 .

It is not a de Polignac number, because 139734765 - 2¹⁵ = 139701997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 139734765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139734767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97071 + ... + 98499.

It is an arithmetic number, because the mean of its divisors is an integer number (5270265).

Almost surely, 2^139734765 is an apocalyptic number.

139734765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139734765 is a deficient number, since it is larger than the sum of its proper divisors (113237955).

139734765 is a wasteful number, since it uses less digits than its factorization.

139734765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 1531 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 139734765 is about 11820.9460281316. The cubic root of 139734765 is about 518.9212907024.

The spelling of 139734765 in words is "one hundred thirty-nine million, seven hundred thirty-four thousand, seven hundred sixty-five".