139451384 has 16 divisors (see below), whose sum is σ = 265155120. Its totient is φ = 68743360.

The previous prime is 139451383. The next prime is 139451399. The reversal of 139451384 is 483154931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139451383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122189 + ... + 123324.

It is an arithmetic number, because the mean of its divisors is an integer number (16572195).

Almost surely, 2^139451384 is an apocalyptic number.

It is an amenable number.

139451384 is a deficient number, since it is larger than the sum of its proper divisors (125703736).

139451384 is a wasteful number, since it uses less digits than its factorization.

139451384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245590 (or 245586 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 139451384 is about 11808.9535522840. The cubic root of 139451384 is about 518.5702638755.

The spelling of 139451384 in words is "one hundred thirty-nine million, four hundred fifty-one thousand, three hundred eighty-four".