40699541 has 2 divisors, whose sum is σ = 40699542. Its totient is φ = 40699540.

The previous prime is 40699537. The next prime is 40699567. The reversal of 40699541 is 14599604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 16982641 = 4870^2 + 4121^2 .

It is a cyclic number.

It is not a de Polignac number, because 40699541 - 2² = 40699537 is a prime.

It is a super-2 number, since 2×40699541² = 3312905275221362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40699495 and 40699504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40699591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20349770 + 20349771.

It is an arithmetic number, because the mean of its divisors is an integer number (20349771).

Almost surely, 2^40699541 is an apocalyptic number.

It is an amenable number.

40699541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40699541 is an equidigital number, since it uses as much as digits as its factorization.

40699541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 40699541 is about 6379.6191892620. The cubic root of 40699541 is about 343.9773426802.

The spelling of 40699541 in words is "forty million, six hundred ninety-nine thousand, five hundred forty-one".