90274969 has 2 divisors, whose sum is σ = 90274970. Its totient is φ = 90274968.

The previous prime is 90274963. The next prime is 90274979. The reversal of 90274969 is 96947209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85377600 + 4897369 = 9240^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 90274969 - 2¹⁷ = 90143897 is a prime.

It is a super-2 number, since 2×90274969² = 16299140055901922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90274963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45137484 + 45137485.

It is an arithmetic number, because the mean of its divisors is an integer number (45137485).

Almost surely, 2^90274969 is an apocalyptic number.

It is an amenable number.

90274969 is a deficient number, since it is larger than the sum of its proper divisors (1).

90274969 is an equidigital number, since it uses as much as digits as its factorization.

90274969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 90274969 is about 9501.3140670120. The cubic root of 90274969 is about 448.5963985750.

The spelling of 90274969 in words is "ninety million, two hundred seventy-four thousand, nine hundred sixty-nine".