99928937 has 2 divisors, whose sum is σ = 99928938. Its totient is φ = 99928936.

The previous prime is 99928921. The next prime is 99928957. The reversal of 99928937 is 73982999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70073641 + 29855296 = 8371^2 + 5464^2 .

It is an emirp because it is prime and its reverse (73982999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99928937 - 2⁴ = 99928921 is a prime.

It is not a weakly prime, because it can be changed into another prime (99928957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49964468 + 49964469.

It is an arithmetic number, because the mean of its divisors is an integer number (49964469).

Almost surely, 2^99928937 is an apocalyptic number.

It is an amenable number.

99928937 is a deficient number, since it is larger than the sum of its proper divisors (1).

99928937 is an equidigital number, since it uses as much as digits as its factorization.

99928937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 56.

The square root of 99928937 is about 9996.4462185319. The cubic root of 99928937 is about 464.0489088977.

The spelling of 99928937 in words is "ninety-nine million, nine hundred twenty-eight thousand, nine hundred thirty-seven".