40719 has 12 divisors (see below), whose sum is σ = 63384. Its totient is φ = 23184.

The previous prime is 40709. The next prime is 40739. The reversal of 40719 is 91704.

It is not a de Polignac number, because 40719 - 2⁷ = 40591 is a prime.

It is a super-2 number, since 2×40719² = 3316073922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40695 and 40704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9 + ... + 285.

It is an arithmetic number, because the mean of its divisors is an integer number (5282).

2⁴⁰⁷¹⁹ is an apocalyptic number.

40719 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

40719 is a deficient number, since it is larger than the sum of its proper divisors (22665).

40719 is a wasteful number, since it uses less digits than its factorization.

40719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 40719 is about 201.7894942756. The cubic root of 40719 is about 34.4032154016.

The spelling of 40719 in words is "forty thousand, seven hundred nineteen".