139930730 has 8 divisors (see below), whose sum is σ = 251875332. Its totient is φ = 55972288.

The previous prime is 139930699. The next prime is 139930733. The reversal of 139930730 is 37039931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 122699929 + 17230801 = 11077^2 + 4151^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139930733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996527 + ... + 6996546.

Almost surely, 2^139930730 is an apocalyptic number.

139930730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139930730 is a deficient number, since it is larger than the sum of its proper divisors (111944602).

139930730 is a wasteful number, since it uses less digits than its factorization.

139930730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993080.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 139930730 is about 11829.2320122652. The cubic root of 139930730 is about 519.1637569935.

The spelling of 139930730 in words is "one hundred thirty-nine million, nine hundred thirty thousand, seven hundred thirty".