139537485 has 40 divisors (see below), whose sum is σ = 252430200. Its totient is φ = 73737216.

The previous prime is 139537477. The next prime is 139537487. The reversal of 139537485 is 584735931.

139537485 is a `hidden beast` number, since 1 + 39 + 537 + 4 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7241481 + 132296004 = 2691^2 + 11502^2 .

It is not a de Polignac number, because 139537485 - 2³ = 139537477 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 139537485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139537487) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 44241 + ... + 47289.

It is an arithmetic number, because the mean of its divisors is an integer number (6310755).

Almost surely, 2^139537485 is an apocalyptic number.

139537485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139537485 is a deficient number, since it is larger than the sum of its proper divisors (112892715).

139537485 is a wasteful number, since it uses less digits than its factorization.

139537485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179 (or 3170 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 139537485 is about 11812.5985710173. The cubic root of 139537485 is about 518.6769682836.

The spelling of 139537485 in words is "one hundred thirty-nine million, five hundred thirty-seven thousand, four hundred eighty-five".