40449089 has 2 divisors, whose sum is σ = 40449090. Its totient is φ = 40449088.

The previous prime is 40449061. The next prime is 40449091. The reversal of 40449089 is 98094404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 12306064 = 5305^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 40449089 - 2⁸ = 40448833 is a prime.

It is a super-2 number, since 2×40449089² = 3272257601859842, which contains 22 as substring.

Together with 40449091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40449049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20224544 + 20224545.

It is an arithmetic number, because the mean of its divisors is an integer number (20224545).

Almost surely, 2^40449089 is an apocalyptic number.

It is an amenable number.

40449089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40449089 is an equidigital number, since it uses as much as digits as its factorization.

40449089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40449089 is about 6359.9598269171. The cubic root of 40449089 is about 343.2703147814.

The spelling of 40449089 in words is "forty million, four hundred forty-nine thousand, eighty-nine".