70440789 has 8 divisors (see below), whose sum is σ = 98004672. Its totient is φ = 44918720.

The previous prime is 70440781. The next prime is 70440841. The reversal of 70440789 is 98704407.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70440789 - 2³ = 70440781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70440781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510372 + ... + 510509.

It is an arithmetic number, because the mean of its divisors is an integer number (12250584).

Almost surely, 2^70440789 is an apocalyptic number.

It is an amenable number.

70440789 is a deficient number, since it is larger than the sum of its proper divisors (27563883).

70440789 is a wasteful number, since it uses less digits than its factorization.

70440789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020907.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 70440789 is about 8392.9011074836. The cubic root of 70440789 is about 412.9917763803.

The spelling of 70440789 in words is "seventy million, four hundred forty thousand, seven hundred eighty-nine".