99990547 has 2 divisors, whose sum is σ = 99990548. Its totient is φ = 99990546.

The previous prime is 99990533. The next prime is 99990551. The reversal of 99990547 is 74509999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99990547 - 2⁷ = 99990419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99990494 and 99990503.

It is not a weakly prime, because it can be changed into another prime (99990577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49995273 + 49995274.

It is an arithmetic number, because the mean of its divisors is an integer number (49995274).

Almost surely, 2^99990547 is an apocalyptic number.

99990547 is a deficient number, since it is larger than the sum of its proper divisors (1).

99990547 is an equidigital number, since it uses as much as digits as its factorization.

99990547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 99990547 is about 9999.5273388296. The cubic root of 99990547 is about 464.1442572540.

The spelling of 99990547 in words is "ninety-nine million, nine hundred ninety thousand, five hundred forty-seven".