70032989 has 4 divisors (see below), whose sum is σ = 75420156. Its totient is φ = 64645824.

The previous prime is 70032983. The next prime is 70033001. The reversal of 70032989 is 98923007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27352900 + 42680089 = 5230^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 70032989 - 2⁸ = 70032733 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 (70032983) 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, 2693564 + ... + 2693589.

It is an arithmetic number, because the mean of its divisors is an integer number (18855039).

Almost surely, 2^70032989 is an apocalyptic number.

It is an amenable number.

70032989 is a deficient number, since it is larger than the sum of its proper divisors (5387167).

70032989 is a wasteful number, since it uses less digits than its factorization.

70032989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387166.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 70032989 is about 8368.5715029508. The cubic root of 70032989 is about 412.1932612803.

The spelling of 70032989 in words is "seventy million, thirty-two thousand, nine hundred eighty-nine".