70440479 has 2 divisors, whose sum is σ = 70440480. Its totient is φ = 70440478.

The previous prime is 70440473. The next prime is 70440497. The reversal of 70440479 is 97404407.

Together with next prime (70440497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70440479 - 2¹⁶ = 70374943 is a prime.

It is a super-2 number, since 2×70440479² = 9923722163498882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70440473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35220239 + 35220240.

It is an arithmetic number, because the mean of its divisors is an integer number (35220240).

Almost surely, 2^70440479 is an apocalyptic number.

70440479 is a deficient number, since it is larger than the sum of its proper divisors (1).

70440479 is an equidigital number, since it uses as much as digits as its factorization.

70440479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 70440479 is about 8392.8826394749. The cubic root of 70440479 is about 412.9911705398.

The spelling of 70440479 in words is "seventy million, four hundred forty thousand, four hundred seventy-nine".