47078869 has 4 divisors (see below), whose sum is σ = 47230560. Its totient is φ = 46927180.

The previous prime is 47078849. The next prime is 47078879. The reversal of 47078869 is 96887074.

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 47078869 - 2⁷ = 47078741 is a prime.

It is a super-2 number, since 2×47078869² = 4432839812638322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47078809) 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, 75379 + ... + 76000.

It is an arithmetic number, because the mean of its divisors is an integer number (11807640).

Almost surely, 2^47078869 is an apocalyptic number.

It is an amenable number.

47078869 is a deficient number, since it is larger than the sum of its proper divisors (151691).

47078869 is a wasteful number, since it uses less digits than its factorization.

47078869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151690.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 47078869 is about 6861.4043023276. The cubic root of 47078869 is about 361.0843565574.

The spelling of 47078869 in words is "forty-seven million, seventy-eight thousand, eight hundred sixty-nine".