40609629 has 12 divisors (see below), whose sum is σ = 58820476. Its totient is φ = 26998272.

The previous prime is 40609627. The next prime is 40609633. The reversal of 40609629 is 92690604.

40609629 is a `hidden beast` number, since 40 + 609 + 6 + 2 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9272025 + 31337604 = 3045^2 + 5598^2 .

It is not a de Polignac number, because 40609629 - 2¹ = 40609627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40609593 and 40609602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40609627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2692 + ... + 9405.

Almost surely, 2^40609629 is an apocalyptic number.

It is an amenable number.

40609629 is a deficient number, since it is larger than the sum of its proper divisors (18210847).

40609629 is a wasteful number, since it uses less digits than its factorization.

40609629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476 (or 12473 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40609629 is about 6372.5684774665. The cubic root of 40609629 is about 343.7238550253.

It can be divided in two parts, 4060 and 9629, that added together give a square (13689 = 117²).

The spelling of 40609629 in words is "forty million, six hundred nine thousand, six hundred twenty-nine".