99732491 has 2 divisors, whose sum is σ = 99732492. Its totient is φ = 99732490.

The previous prime is 99732461. The next prime is 99732517. The reversal of 99732491 is 19423799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99732491 - 2¹⁴ = 99716107 is a prime.

It is a super-2 number, since 2×99732491² = 19893139522130162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99732431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49866245 + 49866246.

It is an arithmetic number, because the mean of its divisors is an integer number (49866246).

Almost surely, 2^99732491 is an apocalyptic number.

99732491 is a deficient number, since it is larger than the sum of its proper divisors (1).

99732491 is an equidigital number, since it uses as much as digits as its factorization.

99732491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 99732491 is about 9986.6155928823. The cubic root of 99732491 is about 463.7446248193.

The spelling of 99732491 in words is "ninety-nine million, seven hundred thirty-two thousand, four hundred ninety-one".