139043834 has 4 divisors (see below), whose sum is σ = 208565754. Its totient is φ = 69521916.

The previous prime is 139043831. The next prime is 139043851. The reversal of 139043834 is 438340931.

139043834 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 138886225 + 157609 = 11785^2 + 397^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139043794 and 139043803.

It is not an unprimeable number, because it can be changed into a prime (139043831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34760957 + ... + 34760960.

Almost surely, 2^139043834 is an apocalyptic number.

139043834 is a deficient number, since it is larger than the sum of its proper divisors (69521920).

139043834 is an equidigital number, since it uses as much as digits as its factorization.

139043834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69521919.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 139043834 is about 11791.6849516937. The cubic root of 139043834 is about 518.0645929499.

The spelling of 139043834 in words is "one hundred thirty-nine million, forty-three thousand, eight hundred thirty-four".