40649450 has 48 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 15600000.

The previous prime is 40649449. The next prime is 40649459. The reversal of 40649450 is 5494604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40649459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161825 + ... + 162075.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^40649450 is an apocalyptic number.

40649450 is a deficient number, since it is larger than the sum of its proper divisors (38095510).

40649450 is a wasteful number, since it uses less digits than its factorization.

40649450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40649450 is about 6375.6921192918. The cubic root of 40649450 is about 343.8361679301.

The spelling of 40649450 in words is "forty million, six hundred forty-nine thousand, four hundred fifty".