39898789 has 16 divisors (see below), whose sum is σ = 47088000. Its totient is φ = 33788832.

The previous prime is 39898787. The next prime is 39898799. The reversal of 39898789 is 98789893.

It is not a de Polignac number, because 39898789 - 2¹ = 39898787 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 (39898787) 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, 29874 + ... + 31180.

It is an arithmetic number, because the mean of its divisors is an integer number (2943000).

Almost surely, 2^39898789 is an apocalyptic number.

It is an amenable number.

39898789 is a deficient number, since it is larger than the sum of its proper divisors (7189211).

39898789 is an equidigital number, since it uses as much as digits as its factorization.

39898789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417 (or 1403 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 61.

The square root of 39898789 is about 6316.5488203607. The cubic root of 39898789 is about 341.7064984166.

The spelling of 39898789 in words is "thirty-nine million, eight hundred ninety-eight thousand, seven hundred eighty-nine".