139446705 has 16 divisors (see below), whose sum is σ = 223265664. Its totient is φ = 74321280.

The previous prime is 139446691. The next prime is 139446707. The reversal of 139446705 is 507644931.

139446705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139446705 - 2⁴ = 139446689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139446707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33700 + ... + 37610.

It is an arithmetic number, because the mean of its divisors is an integer number (13954104).

Almost surely, 2^139446705 is an apocalyptic number.

139446705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139446705 is a deficient number, since it is larger than the sum of its proper divisors (83818959).

139446705 is a wasteful number, since it uses less digits than its factorization.

139446705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 139446705 is about 11808.7554382331. The cubic root of 139446705 is about 518.5644639632.

The spelling of 139446705 in words is "one hundred thirty-nine million, four hundred forty-six thousand, seven hundred five".