40472787 has 6 divisors (see below), whose sum is σ = 53978412. Its totient is φ = 26974512.

The previous prime is 40472779. The next prime is 40472791. The reversal of 40472787 is 78727404.

It is not a de Polignac number, because 40472787 - 2³ = 40472779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40472797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9183 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (8996402).

Almost surely, 2^40472787 is an apocalyptic number.

40472787 is a deficient number, since it is larger than the sum of its proper divisors (13505625).

40472787 is an frugal number, since it uses more digits than its factorization.

40472787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7349 (or 3676 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 40472787 is about 6361.8226162005. The cubic root of 40472787 is about 343.3373392145.

The spelling of 40472787 in words is "forty million, four hundred seventy-two thousand, seven hundred eighty-seven".