84430193938 has 4 divisors (see below), whose sum is σ = 126645290910. Its totient is φ = 42215096968.

The previous prime is 84430193917. The next prime is 84430193951. The reversal of 84430193938 is 83939103448.

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., 78409520289 + 6020673649 = 280017^2 + 77593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107548483 + ... + 21107548486.

Almost surely, 2^84430193938 is an apocalyptic number.

84430193938 is a deficient number, since it is larger than the sum of its proper divisors (42215096972).

84430193938 is a wasteful number, since it uses less digits than its factorization.

84430193938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42215096971.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 84430193938 in words is "eighty-four billion, four hundred thirty million, one hundred ninety-three thousand, nine hundred thirty-eight".