139563745 has 8 divisors (see below), whose sum is σ = 167607720. Its totient is φ = 111563520.

The previous prime is 139563703. The next prime is 139563769. The reversal of 139563745 is 547365931.

It can be written as a sum of positive squares in 4 ways, for example, as 40401 + 139523344 = 201^2 + 11812^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139563745 - 2⁹ = 139563233 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (20950965).

Almost surely, 2^139563745 is an apocalyptic number.

It is an amenable number.

139563745 is a deficient number, since it is larger than the sum of its proper divisors (28043975).

139563745 is a wasteful number, since it uses less digits than its factorization.

139563745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21875.

The product of its digits is 340200, while the sum is 43.

The square root of 139563745 is about 11813.7100438431. The cubic root of 139563745 is about 518.7095033950.

The spelling of 139563745 in words is "one hundred thirty-nine million, five hundred sixty-three thousand, seven hundred forty-five".