39802489 has 12 divisors (see below), whose sum is σ = 42266896. Its totient is φ = 37470312.

The previous prime is 39802463. The next prime is 39802493. The reversal of 39802489 is 98420893.

It is a happy number.

It is not a de Polignac number, because 39802489 - 2¹⁷ = 39671417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39802429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34882 + ... + 36004.

Almost surely, 2^39802489 is an apocalyptic number.

It is an amenable number.

39802489 is a deficient number, since it is larger than the sum of its proper divisors (2464407).

39802489 is a wasteful number, since it uses less digits than its factorization.

39802489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 39802489 is about 6308.9213816626. The cubic root of 39802489 is about 341.4313618648.

The spelling of 39802489 in words is "thirty-nine million, eight hundred two thousand, four hundred eighty-nine".