70422391 has 8 divisors (see below), whose sum is σ = 76512240. Its totient is φ = 64428672.

The previous prime is 70422377. The next prime is 70422409. The reversal of 70422391 is 19322407.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70422391 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 (70422301) 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, 22501 + ... + 25438.

It is an arithmetic number, because the mean of its divisors is an integer number (9564030).

Almost surely, 2^70422391 is an apocalyptic number.

70422391 is a deficient number, since it is larger than the sum of its proper divisors (6089849).

70422391 is a wasteful number, since it uses less digits than its factorization.

70422391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48065.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 70422391 is about 8391.8049905846. The cubic root of 70422391 is about 412.9558176485.

Adding to 70422391 its reverse (19322407), we get a palindrome (89744798).

The spelling of 70422391 in words is "seventy million, four hundred twenty-two thousand, three hundred ninety-one".