9953943928 has 16 divisors (see below), whose sum is σ = 18730067760. Its totient is φ = 4959259200.

The previous prime is 9953943899. The next prime is 9953943929. The reversal of 9953943928 is 8293493599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9953943929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2211708 + ... + 2216203.

It is an arithmetic number, because the mean of its divisors is an integer number (1170629235).

Almost surely, 2^9953943928 is an apocalyptic number.

It is an amenable number.

9953943928 is a deficient number, since it is larger than the sum of its proper divisors (8776123832).

9953943928 is a wasteful number, since it uses less digits than its factorization.

9953943928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428198 (or 4428194 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 61.

The square root of 9953943928 is about 99769.4538824384. The cubic root of 9953943928 is about 2151.1221060213.

The spelling of 9953943928 in words is "nine billion, nine hundred fifty-three million, nine hundred forty-three thousand, nine hundred twenty-eight".