70440089 has 2 divisors, whose sum is σ = 70440090. Its totient is φ = 70440088.

The previous prime is 70440067. The next prime is 70440121. The reversal of 70440089 is 98004407.

It is a happy number.

It is an a-pointer prime, because the next prime (70440121) can be obtained adding 70440089 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62932489 + 7507600 = 7933^2 + 2740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70440089 is a prime.

It is a super-2 number, since 2×70440089² = 9923612276655842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70440059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35220044 + 35220045.

It is an arithmetic number, because the mean of its divisors is an integer number (35220045).

Almost surely, 2^70440089 is an apocalyptic number.

It is an amenable number.

70440089 is a deficient number, since it is larger than the sum of its proper divisors (1).

70440089 is an equidigital number, since it uses as much as digits as its factorization.

70440089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 70440089 is about 8392.8594054708. The cubic root of 70440089 is about 412.9904083509.

The spelling of 70440089 in words is "seventy million, four hundred forty thousand, eighty-nine".