40472946 has 20 divisors (see below), whose sum is σ = 90689742. Its totient is φ = 13490928.

The previous prime is 40472941. The next prime is 40472947. The reversal of 40472946 is 64927404.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 1347921 = 6255^2 + 1161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40472946.

It is not an unprimeable number, because it can be changed into a prime (40472941) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124755 + ... + 125078.

Almost surely, 2^40472946 is an apocalyptic number.

40472946 is an abundant number, since it is smaller than the sum of its proper divisors (50216796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40472946 is a wasteful number, since it uses less digits than its factorization.

40472946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249847 (or 249838 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 40472946 is about 6361.8351126071. The cubic root of 40472946 is about 343.3377888216.

The spelling of 40472946 in words is "forty million, four hundred seventy-two thousand, nine hundred forty-six".