39738890 has 16 divisors (see below), whose sum is σ = 71602920. Its totient is φ = 15879360.

The previous prime is 39738857. The next prime is 39738901. The reversal of 39738890 is 9883793.

39738890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18292729 + 21446161 = 4277^2 + 4631^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15500 + ... + 17880.

Almost surely, 2^39738890 is an apocalyptic number.

39738890 is a deficient number, since it is larger than the sum of its proper divisors (31864030).

39738890 is a wasteful number, since it uses less digits than its factorization.

39738890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 39738890 is about 6303.8789645741. The cubic root of 39738890 is about 341.2494111902.

The spelling of 39738890 in words is "thirty-nine million, seven hundred thirty-eight thousand, eight hundred ninety".