9090070237 has 2 divisors, whose sum is σ = 9090070238. Its totient is φ = 9090070236.

The previous prime is 9090070217. The next prime is 9090070247. The reversal of 9090070237 is 7320700909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5678225316 + 3411844921 = 75354^2 + 58411^2 .

It is an emirp because it is prime and its reverse (7320700909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9090070237 - 2²⁷ = 8955852509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9090070196 and 9090070205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9090070207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545035118 + 4545035119.

It is an arithmetic number, because the mean of its divisors is an integer number (4545035119).

Almost surely, 2^9090070237 is an apocalyptic number.

It is an amenable number.

9090070237 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090070237 is an equidigital number, since it uses as much as digits as its factorization.

9090070237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 9090070237 is about 95341.8598360657. The cubic root of 9090070237 is about 2086.9998265822. Note that the first 3 decimals are identical.

The spelling of 9090070237 in words is "nine billion, ninety million, seventy thousand, two hundred thirty-seven".