46686139 has 4 divisors (see below), whose sum is σ = 47148480. Its totient is φ = 46223800.

The previous prime is 46686137. The next prime is 46686149. The reversal of 46686139 is 93168664.

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 46686139 - 2¹ = 46686137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 46686095 and 46686104.

It is not an unprimeable number, because it can be changed into a prime (46686137) 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, 231019 + ... + 231220.

It is an arithmetic number, because the mean of its divisors is an integer number (11787120).

Almost surely, 2^46686139 is an apocalyptic number.

46686139 is a deficient number, since it is larger than the sum of its proper divisors (462341).

46686139 is a wasteful number, since it uses less digits than its factorization.

46686139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462340.

The product of its digits is 186624, while the sum is 43.

The square root of 46686139 is about 6832.7255908605. The cubic root of 46686139 is about 360.0775013183.

The spelling of 46686139 in words is "forty-six million, six hundred eighty-six thousand, one hundred thirty-nine".