139419705 has 16 divisors (see below), whose sum is σ = 224002944. Its totient is φ = 74046720.

The previous prime is 139419691. The next prime is 139419713. The reversal of 139419705 is 507914931.

It is a happy number.

It is not a de Polignac number, because 139419705 - 2⁴ = 139419689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15669 + ... + 22898.

It is an arithmetic number, because the mean of its divisors is an integer number (14000184).

Almost surely, 2^139419705 is an apocalyptic number.

139419705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139419705 is a deficient number, since it is larger than the sum of its proper divisors (84583239).

139419705 is a wasteful number, since it uses less digits than its factorization.

139419705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38816.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 139419705 is about 11807.6121633462. The cubic root of 139419705 is about 518.5309932445.

The spelling of 139419705 in words is "one hundred thirty-nine million, four hundred nineteen thousand, seven hundred five".