46406978 has 6 divisors (see below), whose sum is σ = 69624921. Its totient is φ = 23198672.

The previous prime is 46406977. The next prime is 46407013. The reversal of 46406978 is 87960464.

It can be written as a sum of positive squares in 2 ways, for example, as 36566209 + 9840769 = 6047^2 + 3137^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4817.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46406977) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7226 + ... + 12042.

Almost surely, 2^46406978 is an apocalyptic number.

46406978 is a deficient number, since it is larger than the sum of its proper divisors (23217943).

46406978 is an frugal number, since it uses more digits than its factorization.

46406978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 46406978 is about 6812.2667299512. The cubic root of 46406978 is about 359.3583684099.

The spelling of 46406978 in words is "forty-six million, four hundred six thousand, nine hundred seventy-eight".