39720354 has 8 divisors (see below), whose sum is σ = 79440720. Its totient is φ = 13240116.

The previous prime is 39720353. The next prime is 39720361. The reversal of 39720354 is 45302793.

It is a happy number.

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

39720354 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39720353) 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, 3310024 + ... + 3310035.

It is an arithmetic number, because the mean of its divisors is an integer number (9930090).

Almost surely, 2^39720354 is an apocalyptic number.

39720354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39720354 is a wasteful number, since it uses less digits than its factorization.

39720354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620064.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 39720354 is about 6302.4085871990. The cubic root of 39720354 is about 341.1963449300.

The spelling of 39720354 in words is "thirty-nine million, seven hundred twenty thousand, three hundred fifty-four".