40797021 has 8 divisors (see below), whose sum is σ = 54446400. Its totient is φ = 27172832.

The previous prime is 40797019. The next prime is 40797041. The reversal of 40797021 is 12079704.

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 40797021 - 2¹ = 40797019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40797021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40797041) 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, 2121 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (6805800).

Almost surely, 2^40797021 is an apocalyptic number.

It is an amenable number.

40797021 is a deficient number, since it is larger than the sum of its proper divisors (13649379).

40797021 is a wasteful number, since it uses less digits than its factorization.

40797021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12595.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 40797021 is about 6387.2545745414. The cubic root of 40797021 is about 344.2517452574.

The spelling of 40797021 in words is "forty million, seven hundred ninety-seven thousand, twenty-one".