78070469 has 4 divisors (see below), whose sum is σ = 78091296. Its totient is φ = 78049644.

The previous prime is 78070453. The next prime is 78070471. The reversal of 78070469 is 96407087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78070469 - 2⁴ = 78070453 is a prime.

It is a super-2 number, since 2×78070469² = 12189996259759922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78070429) 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, 3059 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (19522824).

Almost surely, 2^78070469 is an apocalyptic number.

It is an amenable number.

78070469 is a deficient number, since it is larger than the sum of its proper divisors (20827).

78070469 is a wasteful number, since it uses less digits than its factorization.

78070469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20826.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 78070469 is about 8835.7494871686. The cubic root of 78070469 is about 427.3945003736.

The spelling of 78070469 in words is "seventy-eight million, seventy thousand, four hundred sixty-nine".