70022399 has 4 divisors (see below), whose sum is σ = 70052400. Its totient is φ = 69992400.

The previous prime is 70022357. The next prime is 70022411. The reversal of 70022399 is 99322007.

Added to its reverse (99322007) it gives a triangular number (169344406 = T₁₈₄₀₃).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99322007 = 17 ⋅5842471.

It is a cyclic number.

It is not a de Polignac number, because 70022399 - 2²⁰ = 68973823 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 (70022299) 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, 11174 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (17513100).

Almost surely, 2^70022399 is an apocalyptic number.

70022399 is a deficient number, since it is larger than the sum of its proper divisors (30001).

70022399 is a wasteful number, since it uses less digits than its factorization.

70022399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30000.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 70022399 is about 8367.9387545560. The cubic root of 70022399 is about 412.1724837070.

Adding to 70022399 its reverse (99322007), we get a triangular number (169344406 = T₁₈₄₀₃).

The spelling of 70022399 in words is "seventy million, twenty-two thousand, three hundred ninety-nine".