99402866 has 4 divisors (see below), whose sum is σ = 149104302. Its totient is φ = 49701432.

The previous prime is 99402857. The next prime is 99402869. The reversal of 99402866 is 66820499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66820499 = 6571 ⋅10169.

It can be written as a sum of positive squares in only one way, i.e., 78836641 + 20566225 = 8879^2 + 4535^2 .

It is not an unprimeable number, because it can be changed into a prime (99402869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24850715 + ... + 24850718.

Almost surely, 2^99402866 is an apocalyptic number.

99402866 is a deficient number, since it is larger than the sum of its proper divisors (49701436).

99402866 is a wasteful number, since it uses less digits than its factorization.

99402866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49701435.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 99402866 is about 9970.0985952998. The cubic root of 99402866 is about 463.2331547933.

The spelling of 99402866 in words is "ninety-nine million, four hundred two thousand, eight hundred sixty-six".