90950129 has 2 divisors, whose sum is σ = 90950130. Its totient is φ = 90950128.

The previous prime is 90950113. The next prime is 90950141. The reversal of 90950129 is 92105909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 45252529 = 6760^2 + 6727^2 .

It is a cyclic number.

It is not a de Polignac number, because 90950129 - 2⁴ = 90950113 is a prime.

It is not a weakly prime, because it can be changed into another prime (90950159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45475064 + 45475065.

It is an arithmetic number, because the mean of its divisors is an integer number (45475065).

Almost surely, 2^90950129 is an apocalyptic number.

It is an amenable number.

90950129 is a deficient number, since it is larger than the sum of its proper divisors (1).

90950129 is an equidigital number, since it uses as much as digits as its factorization.

90950129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 90950129 is about 9536.7777052839. Note that the first 4 decimals coincide. The cubic root of 90950129 is about 449.7119621730.

The spelling of 90950129 in words is "ninety million, nine hundred fifty thousand, one hundred twenty-nine".