39409090 has 16 divisors (see below), whose sum is σ = 81070272. Its totient is φ = 13511664.

The previous prime is 39409081. The next prime is 39409093. The reversal of 39409090 is 9090493.

39409090 is a modest number, since divided by 9090 gives 3940 as remainder.

It is not an unprimeable number, because it can be changed into a prime (39409093) 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, 281424 + ... + 281563.

It is an arithmetic number, because the mean of its divisors is an integer number (5066892).

Almost surely, 2^39409090 is an apocalyptic number.

39409090 is an abundant number, since it is smaller than the sum of its proper divisors (41661182).

39409090 is a wasteful number, since it uses less digits than its factorization.

39409090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563001.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 39409090 is about 6277.6659675392. The cubic root of 39409090 is about 340.3027580063.

The spelling of 39409090 in words is "thirty-nine million, four hundred nine thousand, ninety".