39457942 has 8 divisors (see below), whose sum is σ = 59280336. Its totient is φ = 19697832.

The previous prime is 39457939. The next prime is 39457967. The reversal of 39457942 is 24975493.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13953 + ... + 16540.

It is an arithmetic number, because the mean of its divisors is an integer number (7410042).

Almost surely, 2^39457942 is an apocalyptic number.

39457942 is a deficient number, since it is larger than the sum of its proper divisors (19822394).

39457942 is a wasteful number, since it uses less digits than its factorization.

39457942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31142.

The product of its digits is 272160, while the sum is 43.

The square root of 39457942 is about 6281.5556990287. Note that the first 3 decimals coincide. The cubic root of 39457942 is about 340.4433144597.

The spelling of 39457942 in words is "thirty-nine million, four hundred fifty-seven thousand, nine hundred forty-two".