990150517 has 2 divisors, whose sum is σ = 990150518. Its totient is φ = 990150516.

The previous prime is 990150479. The next prime is 990150563. The reversal of 990150517 is 715051099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989039601 + 1110916 = 31449^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 990150517 - 2⁷ = 990150389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990150587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495075258 + 495075259.

It is an arithmetic number, because the mean of its divisors is an integer number (495075259).

Almost surely, 2^990150517 is an apocalyptic number.

It is an amenable number.

990150517 is a deficient number, since it is larger than the sum of its proper divisors (1).

990150517 is an equidigital number, since it uses as much as digits as its factorization.

990150517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 990150517 is about 31466.6572263404. The cubic root of 990150517 is about 996.7060004809.

The spelling of 990150517 in words is "nine hundred ninety million, one hundred fifty thousand, five hundred seventeen".