859378038434 has 4 divisors (see below), whose sum is σ = 1289067057654. Its totient is φ = 429689019216.

The previous prime is 859378038419. The next prime is 859378038461. The reversal of 859378038434 is 434830873958.

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., 552722363209 + 306655675225 = 743453^2 + 553765^2 .

It is a super-2 number, since 2×859378038434² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214844509607 + ... + 214844509610.

Almost surely, 2^859378038434 is an apocalyptic number.

859378038434 is a deficient number, since it is larger than the sum of its proper divisors (429689019220).

859378038434 is a wasteful number, since it uses less digits than its factorization.

859378038434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429689019219.

The product of its (nonzero) digits is 69672960, while the sum is 62.

The spelling of 859378038434 in words is "eight hundred fifty-nine billion, three hundred seventy-eight million, thirty-eight thousand, four hundred thirty-four".