139075814 has 4 divisors (see below), whose sum is σ = 208613724. Its totient is φ = 69537906.

The previous prime is 139075799. The next prime is 139075819. The reversal of 139075814 is 418570931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139075819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34768952 + ... + 34768955.

It is an arithmetic number, because the mean of its divisors is an integer number (52153431).

Almost surely, 2^139075814 is an apocalyptic number.

139075814 is a deficient number, since it is larger than the sum of its proper divisors (69537910).

139075814 is an equidigital number, since it uses as much as digits as its factorization.

139075814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69537909.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 139075814 is about 11793.0409140306. The cubic root of 139075814 is about 518.1043080891.

The spelling of 139075814 in words is "one hundred thirty-nine million, seventy-five thousand, eight hundred fourteen".