40719669 has 8 divisors (see below), whose sum is σ = 54412512. Its totient is φ = 27086640.

The previous prime is 40719649. The next prime is 40719671. The reversal of 40719669 is 96691704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40719669 - 2¹³ = 40711477 is a prime.

It is a super-2 number, since 2×40719669² = 3316182886939122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40719669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40719649) 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, 13339 + ... + 16104.

It is an arithmetic number, because the mean of its divisors is an integer number (6801564).

Almost surely, 2^40719669 is an apocalyptic number.

It is an amenable number.

40719669 is a deficient number, since it is larger than the sum of its proper divisors (13692843).

40719669 is a wasteful number, since it uses less digits than its factorization.

40719669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29907.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 40719669 is about 6381.1965178954. The cubic root of 40719669 is about 344.0340381183.

The spelling of 40719669 in words is "forty million, seven hundred nineteen thousand, six hundred sixty-nine".