139928999 has 8 divisors (see below), whose sum is σ = 161568288. Its totient is φ = 118702080.

The previous prime is 139928993. The next prime is 139929103. The reversal of 139928999 is 999829931.

139928999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 139928999 - 2⁸ = 139928743 is a prime.

It is a super-2 number, since 2×139928999² = 39160249522284002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139928993) 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, 102362 + ... + 103719.

It is an arithmetic number, because the mean of its divisors is an integer number (20196036).

Almost surely, 2^139928999 is an apocalyptic number.

139928999 is a deficient number, since it is larger than the sum of its proper divisors (21639289).

139928999 is an equidigital number, since it uses as much as digits as its factorization.

139928999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206185.

The product of its digits is 2834352, while the sum is 59.

The square root of 139928999 is about 11829.1588458352. The cubic root of 139928999 is about 519.1616162291.

The spelling of 139928999 in words is "one hundred thirty-nine million, nine hundred twenty-eight thousand, nine hundred ninety-nine".