70371909 has 20 divisors (see below), whose sum is σ = 106700704. Its totient is φ = 46210824.

The previous prime is 70371907. The next prime is 70371923. The reversal of 70371909 is 90917307.

It is not a de Polignac number, because 70371909 - 2¹ = 70371907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70371907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1057 + ... + 11910.

Almost surely, 2^70371909 is an apocalyptic number.

It is an amenable number.

70371909 is a deficient number, since it is larger than the sum of its proper divisors (36328795).

70371909 is a wasteful number, since it uses less digits than its factorization.

70371909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13046 (or 13037 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 70371909 is about 8388.7966359902. The cubic root of 70371909 is about 412.8571188369.

The spelling of 70371909 in words is "seventy million, three hundred seventy-one thousand, nine hundred nine".