39953942 has 8 divisors (see below), whose sum is σ = 68492496. Its totient is φ = 17123112.

The previous prime is 39953939. The next prime is 39953957. The reversal of 39953942 is 24935993.

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

It is a junction number, because it is equal to n+sod(n) for n = 39953893 and 39953902.

It is a congruent number.

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, 1426913 + ... + 1426940.

It is an arithmetic number, because the mean of its divisors is an integer number (8561562).

Almost surely, 2^39953942 is an apocalyptic number.

39953942 is a deficient number, since it is larger than the sum of its proper divisors (28538554).

39953942 is a wasteful number, since it uses less digits than its factorization.

39953942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853862.

The product of its digits is 262440, while the sum is 44.

The square root of 39953942 is about 6320.9130669548. The cubic root of 39953942 is about 341.8638754684.

The spelling of 39953942 in words is "thirty-nine million, nine hundred fifty-three thousand, nine hundred forty-two".