45698209 has 2 divisors, whose sum is σ = 45698210. Its totient is φ = 45698208.

The previous prime is 45698201. The next prime is 45698251. The reversal of 45698209 is 90289654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28058209 + 17640000 = 5297^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 45698209 - 2³ = 45698201 is a prime.

It is a super-4 number, since 4×45698209⁴ (a number of 32 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (45698201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22849104 + 22849105.

It is an arithmetic number, because the mean of its divisors is an integer number (22849105).

Almost surely, 2^45698209 is an apocalyptic number.

It is an amenable number.

45698209 is a deficient number, since it is larger than the sum of its proper divisors (1).

45698209 is an equidigital number, since it uses as much as digits as its factorization.

45698209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 45698209 is about 6760.0450442286. The cubic root of 45698209 is about 357.5194936149.

The spelling of 45698209 in words is "forty-five million, six hundred ninety-eight thousand, two hundred nine".