39998464 has 88 divisors (see below), whose sum is σ = 90199008. Its totient is φ = 17571840.

The previous prime is 39998461. The next prime is 39998479. The reversal of 39998464 is 46489993.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596959 + ... + 597025.

Almost surely, 2^39998464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39998464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45099504).

39998464 is an abundant number, since it is smaller than the sum of its proper divisors (50200544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39998464 is a wasteful number, since it uses less digits than its factorization.

39998464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 133 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The square root of 39998464 is about 6324.4338877088. The cubic root of 39998464 is about 341.9908117409.

The spelling of 39998464 in words is "thirty-nine million, nine hundred ninety-eight thousand, four hundred sixty-four".