83998738 has 4 divisors (see below), whose sum is σ = 125998110. Its totient is φ = 41999368.

The previous prime is 83998723. The next prime is 83998757. The reversal of 83998738 is 83789938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83789938 = 2 ⋅41894969.

It can be written as a sum of positive squares in only one way, i.e., 59861169 + 24137569 = 7737^2 + 4913^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20999683 + ... + 20999686.

Almost surely, 2^83998738 is an apocalyptic number.

83998738 is a deficient number, since it is larger than the sum of its proper divisors (41999372).

83998738 is a wasteful number, since it uses less digits than its factorization.

83998738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41999371.

The product of its digits is 2612736, while the sum is 55.

The square root of 83998738 is about 9165.0825419087. The cubic root of 83998738 is about 437.9497207424.

The spelling of 83998738 in words is "eighty-three million, nine hundred ninety-eight thousand, seven hundred thirty-eight".