39794890 has 16 divisors (see below), whose sum is σ = 71723880. Its totient is φ = 15897280.

The previous prime is 39794857. The next prime is 39794897. The reversal of 39794890 is 9849793.

It can be written as a sum of positive squares in 4 ways, for example, as 39727809 + 67081 = 6303^2 + 259^2 .

It is a super-2 number, since 2×39794890² = 3167266540224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39794897) 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, 7296 + ... + 11524.

Almost surely, 2^39794890 is an apocalyptic number.

39794890 is a deficient number, since it is larger than the sum of its proper divisors (31928990).

39794890 is a wasteful number, since it uses less digits than its factorization.

39794890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 39794890 is about 6308.3191105080. The cubic root of 39794890 is about 341.4096320508.

The spelling of 39794890 in words is "thirty-nine million, seven hundred ninety-four thousand, eight hundred ninety".