40246649 has 4 divisors (see below), whose sum is σ = 41544960. Its totient is φ = 38948340.

The previous prime is 40246631. The next prime is 40246691. The reversal of 40246649 is 94664204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40246649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40246049) 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, 649109 + ... + 649170.

It is an arithmetic number, because the mean of its divisors is an integer number (10386240).

Almost surely, 2^40246649 is an apocalyptic number.

It is an amenable number.

40246649 is a deficient number, since it is larger than the sum of its proper divisors (1298311).

40246649 is a wasteful number, since it uses less digits than its factorization.

40246649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298310.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 40246649 is about 6344.0246689306. The cubic root of 40246649 is about 342.6966891985.

The spelling of 40246649 in words is "forty million, two hundred forty-six thousand, six hundred forty-nine".