46778887 has 4 divisors (see below), whose sum is σ = 47545816. Its totient is φ = 46011960.

The previous prime is 46778873. The next prime is 46778891. The reversal of 46778887 is 78887764.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 46778887 - 2¹¹ = 46776839 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 (46778867) 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, 383373 + ... + 383494.

It is an arithmetic number, because the mean of its divisors is an integer number (11886454).

Almost surely, 2^46778887 is an apocalyptic number.

46778887 is a deficient number, since it is larger than the sum of its proper divisors (766929).

46778887 is an equidigital number, since it uses as much as digits as its factorization.

46778887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766928.

The product of its digits is 4214784, while the sum is 55.

The square root of 46778887 is about 6839.5092660219. The cubic root of 46778887 is about 360.3157902961.

The spelling of 46778887 in words is "forty-six million, seven hundred seventy-eight thousand, eight hundred eighty-seven".