40689775 has 12 divisors (see below), whose sum is σ = 57663472. Its totient is φ = 27901440.

The previous prime is 40689767. The next prime is 40689787. The reversal of 40689775 is 57798604.

It is a happy number.

It is not a de Polignac number, because 40689775 - 2³ = 40689767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116082 + ... + 116431.

Almost surely, 2^40689775 is an apocalyptic number.

40689775 is a deficient number, since it is larger than the sum of its proper divisors (16973697).

40689775 is a wasteful number, since it uses less digits than its factorization.

40689775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232530 (or 232525 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 40689775 is about 6378.8537371537. The cubic root of 40689775 is about 343.9498276160.

The spelling of 40689775 in words is "forty million, six hundred eighty-nine thousand, seven hundred seventy-five".