40284905 has 8 divisors (see below), whose sum is σ = 49161600. Its totient is φ = 31681456.

The previous prime is 40284899. The next prime is 40284913. The reversal of 40284905 is 50948204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40284905 - 2¹⁴ = 40268521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67985 + ... + 68574.

It is an arithmetic number, because the mean of its divisors is an integer number (6145200).

Almost surely, 2^40284905 is an apocalyptic number.

It is an amenable number.

40284905 is a deficient number, since it is larger than the sum of its proper divisors (8876695).

40284905 is a wasteful number, since it uses less digits than its factorization.

40284905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136623.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40284905 is about 6347.0390734578. The cubic root of 40284905 is about 342.8052369753.

The spelling of 40284905 in words is "forty million, two hundred eighty-four thousand, nine hundred five".