39834991 has 20 divisors (see below), whose sum is σ = 47594592. Its totient is φ = 33323136.

The previous prime is 39834989. The next prime is 39835021. The reversal of 39834991 is 19943893.

It is not a de Polignac number, because 39834991 - 2¹ = 39834989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39834911) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112671 + ... + 113023.

Almost surely, 2^39834991 is an apocalyptic number.

39834991 is a deficient number, since it is larger than the sum of its proper divisors (7759601).

39834991 is an frugal number, since it uses more digits than its factorization.

39834991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 407 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 39834991 is about 6311.4967321547. The cubic root of 39834991 is about 341.5242721591.

The spelling of 39834991 in words is "thirty-nine million, eight hundred thirty-four thousand, nine hundred ninety-one".