40649467 has 4 divisors (see below), whose sum is σ = 40860280. Its totient is φ = 40438656.

The previous prime is 40649461. The next prime is 40649471. The reversal of 40649467 is 76494604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40649467 - 2³ = 40649459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40649461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105117 + ... + 105502.

It is an arithmetic number, because the mean of its divisors is an integer number (10215070).

Almost surely, 2^40649467 is an apocalyptic number.

40649467 is a deficient number, since it is larger than the sum of its proper divisors (210813).

40649467 is a wasteful number, since it uses less digits than its factorization.

40649467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210812.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 40649467 is about 6375.6934524803. The cubic root of 40649467 is about 343.8362158620.

It can be divided in two parts, 4064 and 9467, that added together give a palindrome (13531).

The spelling of 40649467 in words is "forty million, six hundred forty-nine thousand, four hundred sixty-seven".