39149473 has 16 divisors (see below), whose sum is σ = 44808192. Its totient is φ = 33858000.

The previous prime is 39149459. The next prime is 39149483. The reversal of 39149473 is 37494193.

It is a happy number.

It is not a de Polignac number, because 39149473 - 2²¹ = 37052321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39149483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68278 + ... + 68848.

It is an arithmetic number, because the mean of its divisors is an integer number (2800512).

Almost surely, 2^39149473 is an apocalyptic number.

It is an amenable number.

39149473 is a deficient number, since it is larger than the sum of its proper divisors (5658719).

39149473 is a wasteful number, since it uses less digits than its factorization.

39149473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its digits is 81648, while the sum is 40.

The square root of 39149473 is about 6256.9539713826. The cubic root of 39149473 is about 339.5538351918.

The spelling of 39149473 in words is "thirty-nine million, one hundred forty-nine thousand, four hundred seventy-three".