39289290 has 32 divisors (see below), whose sum is σ = 98395776. Its totient is φ = 10021440.

The previous prime is 39289279. The next prime is 39289291. The reversal of 39289290 is 9298293.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39289291) 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, 27781 + ... + 29160.

It is an arithmetic number, because the mean of its divisors is an integer number (3074868).

Almost surely, 2^39289290 is an apocalyptic number.

39289290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39289290 is an abundant number, since it is smaller than the sum of its proper divisors (59106486).

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

39289290 is a wasteful number, since it uses less digits than its factorization.

39289290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56974.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 39289290 is about 6268.1169421127. The cubic root of 39289290 is about 339.9575783290.

The spelling of 39289290 in words is "thirty-nine million, two hundred eighty-nine thousand, two hundred ninety".