39105998 has 4 divisors (see below), whose sum is σ = 58659000. Its totient is φ = 19552998.

The previous prime is 39105991. The next prime is 39106013. The reversal of 39105998 is 89950193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89950193 = 1867 ⋅48179.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39105991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9776498 + ... + 9776501.

It is an arithmetic number, because the mean of its divisors is an integer number (14664750).

Almost surely, 2^39105998 is an apocalyptic number.

39105998 is a deficient number, since it is larger than the sum of its proper divisors (19553002).

39105998 is a wasteful number, since it uses less digits than its factorization.

39105998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19553001.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 39105998 is about 6253.4788717961. The cubic root of 39105998 is about 339.4280985420.

The spelling of 39105998 in words is "thirty-nine million, one hundred five thousand, nine hundred ninety-eight".