39961898 has 8 divisors (see below), whose sum is σ = 60077700. Its totient is φ = 19936000.

The previous prime is 39961877. The next prime is 39961903. The reversal of 39961898 is 89816993.

It can be written as a sum of positive squares in 2 ways, for example, as 39476089 + 485809 = 6283^2 + 697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21353 + ... + 23148.

Almost surely, 2^39961898 is an apocalyptic number.

39961898 is a deficient number, since it is larger than the sum of its proper divisors (20115802).

39961898 is a wasteful number, since it uses less digits than its factorization.

39961898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44952.

The product of its digits is 839808, while the sum is 53.

The square root of 39961898 is about 6321.5423750854. The cubic root of 39961898 is about 341.8865656657.

It can be divided in two parts, 399618 and 98, that multiplied together give a square (39162564 = 6258²).

The spelling of 39961898 in words is "thirty-nine million, nine hundred sixty-one thousand, eight hundred ninety-eight".