39823974 has 40 divisors (see below), whose sum is σ = 89646480. Its totient is φ = 13213584.

The previous prime is 39823967. The next prime is 39823991. The reversal of 39823974 is 47932893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47047 + ... + 47885.

It is an arithmetic number, because the mean of its divisors is an integer number (2241162).

Almost surely, 2^39823974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39823974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44823240).

39823974 is an abundant number, since it is smaller than the sum of its proper divisors (49822506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39823974 is a wasteful number, since it uses less digits than its factorization.

39823974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1137 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 39823974 is about 6310.6238994255. The cubic root of 39823974 is about 341.4927846006.

The spelling of 39823974 in words is "thirty-nine million, eight hundred twenty-three thousand, nine hundred seventy-four".