994999553 has 2 divisors, whose sum is σ = 994999554. Its totient is φ = 994999552.

The previous prime is 994999531. The next prime is 994999561. The reversal of 994999553 is 355999499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941753344 + 53246209 = 30688^2 + 7297^2 .

It is a cyclic number.

It is not a de Polignac number, because 994999553 - 2²⁴ = 978222337 is a prime.

It is a super-2 number, since 2×994999553² = 1980048220940399618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (994999583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497499776 + 497499777.

It is an arithmetic number, because the mean of its divisors is an integer number (497499777).

Almost surely, 2^994999553 is an apocalyptic number.

It is an amenable number.

994999553 is a deficient number, since it is larger than the sum of its proper divisors (1).

994999553 is an equidigital number, since it uses as much as digits as its factorization.

994999553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17714700, while the sum is 62.

The square root of 994999553 is about 31543.6135057479. The cubic root of 994999553 is about 998.3303983149.

The spelling of 994999553 in words is "nine hundred ninety-four million, nine hundred ninety-nine thousand, five hundred fifty-three".