39497742 has 12 divisors (see below), whose sum is σ = 85578480. Its totient is φ = 13165908.

The previous prime is 39497737. The next prime is 39497743. The reversal of 39497742 is 24779493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39497743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1097142 + ... + 1097177.

It is an arithmetic number, because the mean of its divisors is an integer number (7131540).

Almost surely, 2^39497742 is an apocalyptic number.

39497742 is an abundant number, since it is smaller than the sum of its proper divisors (46080738).

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

39497742 is a wasteful number, since it uses less digits than its factorization.

39497742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194327 (or 2194324 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 39497742 is about 6284.7229055862. The cubic root of 39497742 is about 340.5577408597.

The spelling of 39497742 in words is "thirty-nine million, four hundred ninety-seven thousand, seven hundred forty-two".