39973678 has 8 divisors (see below), whose sum is σ = 62567568. Its totient is φ = 19117824.

The previous prime is 39973673. The next prime is 39973691. The reversal of 39973678 is 87637993.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39973673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434451 + ... + 434542.

It is an arithmetic number, because the mean of its divisors is an integer number (7820946).

Almost surely, 2^39973678 is an apocalyptic number.

39973678 is a deficient number, since it is larger than the sum of its proper divisors (22593890).

39973678 is a wasteful number, since it uses less digits than its factorization.

39973678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869018.

The product of its digits is 1714608, while the sum is 52.

The square root of 39973678 is about 6322.4740410697. The cubic root of 39973678 is about 341.9201562296.

The spelling of 39973678 in words is "thirty-nine million, nine hundred seventy-three thousand, six hundred seventy-eight".