49409940 has 24 divisors (see below), whose sum is σ = 138348000. Its totient is φ = 13175968.

The previous prime is 49409933. The next prime is 49409951. The reversal of 49409940 is 4990494.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411690 + ... + 411809.

It is an arithmetic number, because the mean of its divisors is an integer number (5764500).

Almost surely, 2^49409940 is an apocalyptic number.

It is an amenable number.

49409940 is an abundant number, since it is smaller than the sum of its proper divisors (88938060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49409940 is a wasteful number, since it uses less digits than its factorization.

49409940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823511 (or 823509 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 49409940 is about 7029.2204404187. The cubic root of 49409940 is about 366.9482116758.

The spelling of 49409940 in words is "forty-nine million, four hundred nine thousand, nine hundred forty".