139630468 has 18 divisors (see below), whose sum is σ = 257893566. Its totient is φ = 66140064.

The previous prime is 139630453. The next prime is 139630481. The reversal of 139630468 is 864036931.

It can be written as a sum of positive squares in only one way, i.e., 104489284 + 35141184 = 10222^2 + 5928^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139630468.

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 5 ways as a sum of consecutive naturals, for example, 46905 + ... + 49792.

Almost surely, 2^139630468 is an apocalyptic number.

It is an amenable number.

139630468 is a deficient number, since it is larger than the sum of its proper divisors (118263098).

139630468 is a wasteful number, since it uses less digits than its factorization.

139630468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96739 (or 96718 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 139630468 is about 11816.5336710898. The cubic root of 139630468 is about 518.7921522238.

The spelling of 139630468 in words is "one hundred thirty-nine million, six hundred thirty thousand, four hundred sixty-eight".