39493493 has 8 divisors (see below), whose sum is σ = 42819000. Its totient is φ = 36209088.

The previous prime is 39493463. The next prime is 39493577. The reversal of 39493493 is 39439493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2745649 + 36747844 = 1657^2 + 6062^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39493493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39493403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8258 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (5352375).

Almost surely, 2^39493493 is an apocalyptic number.

It is an amenable number.

39493493 is a deficient number, since it is larger than the sum of its proper divisors (3325507).

39493493 is a wasteful number, since it uses less digits than its factorization.

39493493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20551.

The product of its digits is 314928, while the sum is 44.

The square root of 39493493 is about 6284.3848545422. The cubic root of 39493493 is about 340.5455285014.

The spelling of 39493493 in words is "thirty-nine million, four hundred ninety-three thousand, four hundred ninety-three".