40797405 has 64 divisors (see below), whose sum is σ = 80317440. Its totient is φ = 19483200.

The previous prime is 40797401. The next prime is 40797413. The reversal of 40797405 is 50479704.

It is a happy number.

It is not a de Polignac number, because 40797405 - 2² = 40797401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40797405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40797401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123090 + ... + 123420.

It is an arithmetic number, because the mean of its divisors is an integer number (1254960).

Almost surely, 2^40797405 is an apocalyptic number.

40797405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40797405 is a deficient number, since it is larger than the sum of its proper divisors (39520035).

40797405 is a wasteful number, since it uses less digits than its factorization.

40797405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40797405 is about 6387.2846343341. The cubic root of 40797405 is about 344.2528253384.

The spelling of 40797405 in words is "forty million, seven hundred ninety-seven thousand, four hundred five".