70398009 has 48 divisors (see below), whose sum is σ = 118609920. Its totient is φ = 39805920.

The previous prime is 70398007. The next prime is 70398011. The reversal of 70398009 is 90089307.

It is an interprime number because it is at equal distance from previous prime (70398007) and next prime (70398011).

It is not a de Polignac number, because 70398009 - 2¹ = 70398007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70398001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97552 + ... + 98270.

It is an arithmetic number, because the mean of its divisors is an integer number (2471040).

Almost surely, 2^70398009 is an apocalyptic number.

It is an amenable number.

70398009 is a deficient number, since it is larger than the sum of its proper divisors (48211911).

70398009 is a wasteful number, since it uses less digits than its factorization.

70398009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 70398009 is about 8390.3521380214. The cubic root of 70398009 is about 412.9081535896.

The spelling of 70398009 in words is "seventy million, three hundred ninety-eight thousand, nine".