99994437 has 24 divisors (see below), whose sum is σ = 150808320. Its totient is φ = 63771840.

The previous prime is 99994379. The next prime is 99994471. The reversal of 99994437 is 73449999.

It is not a de Polignac number, because 99994437 - 2⁶ = 99994373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99994637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22818 + ... + 26844.

It is an arithmetic number, because the mean of its divisors is an integer number (6283680).

Almost surely, 2^99994437 is an apocalyptic number.

It is an amenable number.

99994437 is a deficient number, since it is larger than the sum of its proper divisors (50813883).

99994437 is a wasteful number, since it uses less digits than its factorization.

99994437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153 (or 4150 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 99994437 is about 9999.7218461315. The cubic root of 99994437 is about 464.1502761488.

The spelling of 99994437 in words is "ninety-nine million, nine hundred ninety-four thousand, four hundred thirty-seven".