40216797 has 8 divisors (see below), whose sum is σ = 59580480. Its totient is φ = 26811180.

The previous prime is 40216789. The next prime is 40216807. The reversal of 40216797 is 79761204.

It is a happy number.

40216797 is a `hidden beast` number, since 402 + 167 + 97 = 666.

It is not a de Polignac number, because 40216797 - 2³ = 40216789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40216717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744729 + ... + 744782.

It is an arithmetic number, because the mean of its divisors is an integer number (7447560).

Almost surely, 2^40216797 is an apocalyptic number.

It is an amenable number.

40216797 is a deficient number, since it is larger than the sum of its proper divisors (19363683).

40216797 is a wasteful number, since it uses less digits than its factorization.

40216797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489520 (or 1489514 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 40216797 is about 6341.6714673657. The cubic root of 40216797 is about 342.6119391866.

The spelling of 40216797 in words is "forty million, two hundred sixteen thousand, seven hundred ninety-seven".