40240719 has 40 divisors (see below), whose sum is σ = 64004160. Its totient is φ = 25147584.

The previous prime is 40240709. The next prime is 40240787. The reversal of 40240719 is 91704204.

It is a happy number.

It is not a de Polignac number, because 40240719 - 2⁴ = 40240703 is a prime.

It is a super-2 number, since 2×40240719² = 3238630931273922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40240692 and 40240701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240709) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 86682 + ... + 87144.

It is an arithmetic number, because the mean of its divisors is an integer number (1600104).

Almost surely, 2^40240719 is an apocalyptic number.

40240719 is a deficient number, since it is larger than the sum of its proper divisors (23763441).

40240719 is a wasteful number, since it uses less digits than its factorization.

40240719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40240719 is about 6343.5572827870. The cubic root of 40240719 is about 342.6798572283.

The spelling of 40240719 in words is "forty million, two hundred forty thousand, seven hundred nineteen".