70440001 has 4 divisors (see below), whose sum is σ = 70578900. Its totient is φ = 70301104.

The previous prime is 70439989. The next prime is 70440017. The reversal of 70440001 is 10004407.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10004407 = 7 ⋅1429201.

It can be written as a sum of positive squares in 2 ways, for example, as 27196225 + 43243776 = 5215^2 + 6576^2 .

It is a cyclic number.

It is not a de Polignac number, because 70440001 - 2⁵ = 70439969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70440031) 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, 68686 + ... + 69703.

It is an arithmetic number, because the mean of its divisors is an integer number (17644725).

Almost surely, 2^70440001 is an apocalyptic number.

It is an amenable number.

70440001 is a deficient number, since it is larger than the sum of its proper divisors (138899).

70440001 is a wasteful number, since it uses less digits than its factorization.

70440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138898.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 70440001 is about 8392.8541629174. The cubic root of 70440001 is about 412.9902363694.

Adding to 70440001 its reverse (10004407), we get a palindrome (80444408).

The spelling of 70440001 in words is "seventy million, four hundred forty thousand, one".