40697019 has 24 divisors (see below), whose sum is σ = 66276560. Its totient is φ = 24662880.

The previous prime is 40697011. The next prime is 40697021. The reversal of 40697019 is 91079604.

It is not a de Polignac number, because 40697019 - 2³ = 40697011 is a prime.

It is a super-2 number, since 2×40697019² = 3312494710972722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40697011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2962 + ... + 9495.

Almost surely, 2^40697019 is an apocalyptic number.

40697019 is a deficient number, since it is larger than the sum of its proper divisors (25579541).

40697019 is a wasteful number, since it uses less digits than its factorization.

40697019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488 (or 12471 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 40697019 is about 6379.4215254990. The cubic root of 40697019 is about 343.9702375323.

The spelling of 40697019 in words is "forty million, six hundred ninety-seven thousand, nineteen".