39387481 has 8 divisors (see below), whose sum is σ = 46566720. Its totient is φ = 32596368.

The previous prime is 39387479. The next prime is 39387493. The reversal of 39387481 is 18478393.

It is a happy number.

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

It is not a de Polignac number, because 39387481 - 2¹ = 39387479 is a prime.

It is a super-2 number, since 2×39387481² = 3102747319050722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39387281) 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, 96811 + ... + 97216.

It is an arithmetic number, because the mean of its divisors is an integer number (5820840).

Almost surely, 2^39387481 is an apocalyptic number.

It is an amenable number.

39387481 is a deficient number, since it is larger than the sum of its proper divisors (7179239).

39387481 is a wasteful number, since it uses less digits than its factorization.

39387481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194063.

The product of its digits is 145152, while the sum is 43.

The square root of 39387481 is about 6275.9446300935. The cubic root of 39387481 is about 340.2405477670.

The spelling of 39387481 in words is "thirty-nine million, three hundred eighty-seven thousand, four hundred eighty-one".