46278649 has 4 divisors (see below), whose sum is σ = 46513764. Its totient is φ = 46043536.

The previous prime is 46278647. The next prime is 46278671. The reversal of 46278649 is 94687264.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43983424 + 2295225 = 6632^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 46278649 - 2¹ = 46278647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 46278599 and 46278608.

It is not an unprimeable number, because it can be changed into a prime (46278643) 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, 117262 + ... + 117655.

It is an arithmetic number, because the mean of its divisors is an integer number (11628441).

Almost surely, 2^46278649 is an apocalyptic number.

It is an amenable number.

46278649 is a deficient number, since it is larger than the sum of its proper divisors (235115).

46278649 is a wasteful number, since it uses less digits than its factorization.

46278649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235114.

The product of its digits is 580608, while the sum is 46.

The square root of 46278649 is about 6802.8412446565. The cubic root of 46278649 is about 359.0268186036.

The spelling of 46278649 in words is "forty-six million, two hundred seventy-eight thousand, six hundred forty-nine".