70469989 has 4 divisors (see below), whose sum is σ = 70622656. Its totient is φ = 70317324.

The previous prime is 70469983. The next prime is 70470041. The reversal of 70469989 is 98996407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70469989 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 (70469983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75639 + ... + 76564.

It is an arithmetic number, because the mean of its divisors is an integer number (17655664).

Almost surely, 2^70469989 is an apocalyptic number.

It is an amenable number.

70469989 is a deficient number, since it is larger than the sum of its proper divisors (152667).

70469989 is a wasteful number, since it uses less digits than its factorization.

70469989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152666.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 70469989 is about 8394.6404926000. The cubic root of 70469989 is about 413.0488346751.

The spelling of 70469989 in words is "seventy million, four hundred sixty-nine thousand, nine hundred eighty-nine".