99962381 has 2 divisors, whose sum is σ = 99962382. Its totient is φ = 99962380.

The previous prime is 99962353. The next prime is 99962411. The reversal of 99962381 is 18326999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75864100 + 24098281 = 8710^2 + 4909^2 .

It is an emirp because it is prime and its reverse (18326999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99962381 is a prime.

It is a super-2 number, since 2×99962381² = 19984955230378322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5759399 and since 99962381 and 5759399 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99962351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49981190 + 49981191.

It is an arithmetic number, because the mean of its divisors is an integer number (49981191).

Almost surely, 2^99962381 is an apocalyptic number.

It is an amenable number.

99962381 is a deficient number, since it is larger than the sum of its proper divisors (1).

99962381 is an equidigital number, since it uses as much as digits as its factorization.

99962381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 99962381 is about 9998.1188730681. The cubic root of 99962381 is about 464.1006720844.

The spelling of 99962381 in words is "ninety-nine million, nine hundred sixty-two thousand, three hundred eighty-one".