40049970 has 32 divisors (see below), whose sum is σ = 96370560. Its totient is φ = 10652160.

The previous prime is 40049953. The next prime is 40049981. The reversal of 40049970 is 7994004.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11650 + ... + 14690.

It is an arithmetic number, because the mean of its divisors is an integer number (3011580).

Almost surely, 2^40049970 is an apocalyptic number.

40049970 is an abundant number, since it is smaller than the sum of its proper divisors (56320590).

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

40049970 is a wasteful number, since it uses less digits than its factorization.

40049970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 40049970 is about 6328.5045626909. The cubic root of 40049970 is about 342.1375425703.

The spelling of 40049970 in words is "forty million, forty-nine thousand, nine hundred seventy".