70444819 has 4 divisors (see below), whose sum is σ = 70476120. Its totient is φ = 70413520.

The previous prime is 70444769. The next prime is 70444823. The reversal of 70444819 is 91844407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91844407 = 9491 ⋅9677.

It is a cyclic number.

It is not a de Polignac number, because 70444819 - 2¹⁵ = 70412051 is a prime.

It is a super-2 number, since 2×70444819² = 9924945047885522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70444859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11989 + ... + 16870.

It is an arithmetic number, because the mean of its divisors is an integer number (17619030).

Almost surely, 2^70444819 is an apocalyptic number.

70444819 is a deficient number, since it is larger than the sum of its proper divisors (31301).

70444819 is a wasteful number, since it uses less digits than its factorization.

70444819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31300.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 70444819 is about 8393.1411878986. The cubic root of 70444819 is about 412.9996521444. Note that the first 3 decimals are identical.

It can be divided in two parts, 70 and 444819, that added together give a square (444889 = 667²).

The spelling of 70444819 in words is "seventy million, four hundred forty-four thousand, eight hundred nineteen".