40798423 has 4 divisors (see below), whose sum is σ = 40950360. Its totient is φ = 40646488.

The previous prime is 40798399. The next prime is 40798427. The reversal of 40798423 is 32489704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40798423 is a prime.

It is a super-2 number, since 2×40798423² = 3329022638573858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40798427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75565 + ... + 76102.

It is an arithmetic number, because the mean of its divisors is an integer number (10237590).

Almost surely, 2^40798423 is an apocalyptic number.

40798423 is a deficient number, since it is larger than the sum of its proper divisors (151937).

40798423 is a wasteful number, since it uses less digits than its factorization.

40798423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151936.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40798423 is about 6387.3643234123. The cubic root of 40798423 is about 344.2556886452.

The spelling of 40798423 in words is "forty million, seven hundred ninety-eight thousand, four hundred twenty-three".