704155139 has 4 divisors (see below), whose sum is σ = 705393240. Its totient is φ = 702917040.

The previous prime is 704155121. The next prime is 704155141. The reversal of 704155139 is 931551407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931551407 = 17093 ⋅54499.

It is a cyclic number.

It is not a de Polignac number, because 704155139 - 2⁸ = 704154883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 704155099 and 704155108.

It is not an unprimeable number, because it can be changed into a prime (704155939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618197 + ... + 619334.

It is an arithmetic number, because the mean of its divisors is an integer number (176348310).

Almost surely, 2^704155139 is an apocalyptic number.

704155139 is a deficient number, since it is larger than the sum of its proper divisors (1238101).

704155139 is a wasteful number, since it uses less digits than its factorization.

704155139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238100.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 704155139 is about 26535.9216723294. The cubic root of 704155139 is about 889.6573772706.

The spelling of 704155139 in words is "seven hundred four million, one hundred fifty-five thousand, one hundred thirty-nine".