98739878 has 4 divisors (see below), whose sum is σ = 148109820. Its totient is φ = 49369938.

The previous prime is 98739829. The next prime is 98739881. The reversal of 98739878 is 87893789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87893789 = 1187 ⋅74047.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24684968 + ... + 24684971.

It is an arithmetic number, because the mean of its divisors is an integer number (37027455).

Almost surely, 2^98739878 is an apocalyptic number.

98739878 is a deficient number, since it is larger than the sum of its proper divisors (49369942).

98739878 is a wasteful number, since it uses less digits than its factorization.

98739878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49369941.

The product of its digits is 6096384, while the sum is 59.

The square root of 98739878 is about 9936.7941510328. The cubic root of 98739878 is about 462.2009801278.

The spelling of 98739878 in words is "ninety-eight million, seven hundred thirty-nine thousand, eight hundred seventy-eight".