70038009 has 12 divisors (see below), whose sum is σ = 106490800. Its totient is φ = 44234424.

The previous prime is 70037999. The next prime is 70038019. The reversal of 70038009 is 90083007.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70037999) and next prime (70038019).

It is not a de Polignac number, because 70038009 - 2⁸ = 70037753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70038019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204619 + ... + 204960.

Almost surely, 2^70038009 is an apocalyptic number.

It is an amenable number.

70038009 is a deficient number, since it is larger than the sum of its proper divisors (36452791).

70038009 is a wasteful number, since it uses less digits than its factorization.

70038009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409604 (or 409601 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 70038009 is about 8368.8714292908. The cubic root of 70038009 is about 412.2031097853.

The spelling of 70038009 in words is "seventy million, thirty-eight thousand, nine".