40023797 has 8 divisors (see below), whose sum is σ = 46230912. Its totient is φ = 34244800.

The previous prime is 40023793. The next prime is 40023811. The reversal of 40023797 is 79732004.

It is a happy number.

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

It is not a de Polignac number, because 40023797 - 2² = 40023793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023791) 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, 106829 + ... + 107202.

It is an arithmetic number, because the mean of its divisors is an integer number (5778864).

Almost surely, 2^40023797 is an apocalyptic number.

It is an amenable number.

40023797 is a deficient number, since it is larger than the sum of its proper divisors (6207115).

40023797 is a wasteful number, since it uses less digits than its factorization.

40023797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214059.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 40023797 is about 6326.4363586462. The cubic root of 40023797 is about 342.0629963864.

The spelling of 40023797 in words is "forty million, twenty-three thousand, seven hundred ninety-seven".