40309803 has 12 divisors (see below), whose sum is σ = 59212920. Its totient is φ = 26417376.

The previous prime is 40309793. The next prime is 40309817. The reversal of 40309803 is 30890304.

It is not a de Polignac number, because 40309803 - 2¹⁴ = 40293419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40309853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37426 + ... + 38487.

It is an arithmetic number, because the mean of its divisors is an integer number (4934410).

Almost surely, 2^40309803 is an apocalyptic number.

40309803 is a deficient number, since it is larger than the sum of its proper divisors (18903117).

40309803 is a wasteful number, since it uses less digits than its factorization.

40309803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75978 (or 75975 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40309803 is about 6349.0001575051. Note that the first 3 decimals coincide. The cubic root of 40309803 is about 342.8758457803.

The spelling of 40309803 in words is "forty million, three hundred nine thousand, eight hundred three".