139451332 has 24 divisors (see below), whose sum is σ = 250555032. Its totient is φ = 67872000.

The previous prime is 139451327. The next prime is 139451339. The reversal of 139451332 is 233154931.

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 139381636 = 264^2 + 11806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139451294 and 139451303.

It is not an unprimeable number, because it can be changed into a prime (139451339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114358 + ... + 115570.

It is an arithmetic number, because the mean of its divisors is an integer number (10439793).

Almost surely, 2^139451332 is an apocalyptic number.

It is an amenable number.

139451332 is a deficient number, since it is larger than the sum of its proper divisors (111103700).

139451332 is a wasteful number, since it uses less digits than its factorization.

139451332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1957 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 139451332 is about 11808.9513505645. The cubic root of 139451332 is about 518.5701994189.

The spelling of 139451332 in words is "one hundred thirty-nine million, four hundred fifty-one thousand, three hundred thirty-two".