70440039 has 12 divisors (see below), whose sum is σ = 101820472. Its totient is φ = 46926000.

The previous prime is 70440031. The next prime is 70440047. The reversal of 70440039 is 93004407.

It is an interprime number because it is at equal distance from previous prime (70440031) and next prime (70440047).

It is not a de Polignac number, because 70440039 - 2³ = 70440031 is a prime.

It is a super-3 number, since 3×70440039³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70439994 and 70440021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70440031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19689 + ... + 22989.

Almost surely, 2^70440039 is an apocalyptic number.

70440039 is a deficient number, since it is larger than the sum of its proper divisors (31380433).

70440039 is a wasteful number, since it uses less digits than its factorization.

70440039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678 (or 5675 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 70440039 is about 8392.8564267477. The cubic root of 70440039 is about 412.9903106342.

The spelling of 70440039 in words is "seventy million, four hundred forty thousand, thirty-nine".