70144999 has 4 divisors (see below), whose sum is σ = 70183800. Its totient is φ = 70106200.

The previous prime is 70144981. The next prime is 70145029. The reversal of 70144999 is 99944107.

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

It is a cyclic number.

It is not a de Polignac number, because 70144999 - 2⁵ = 70144967 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 (70144099) 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, 16549 + ... + 20350.

It is an arithmetic number, because the mean of its divisors is an integer number (17545950).

Almost surely, 2^70144999 is an apocalyptic number.

70144999 is a deficient number, since it is larger than the sum of its proper divisors (38801).

70144999 is a wasteful number, since it uses less digits than its factorization.

70144999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38800.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 70144999 is about 8375.2611302574. The cubic root of 70144999 is about 412.4128966989.

The spelling of 70144999 in words is "seventy million, one hundred forty-four thousand, nine hundred ninety-nine".