40721934 has 16 divisors (see below), whose sum is σ = 88848000. Its totient is φ = 12339960.

The previous prime is 40721929. The next prime is 40721969. The reversal of 40721934 is 43912704.

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, 308434 + ... + 308565.

It is an arithmetic number, because the mean of its divisors is an integer number (5553000).

Almost surely, 2^40721934 is an apocalyptic number.

40721934 is an abundant number, since it is smaller than the sum of its proper divisors (48126066).

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

40721934 is a wasteful number, since it uses less digits than its factorization.

40721934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617015.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40721934 is about 6381.3739899805. The cubic root of 40721934 is about 344.0404168755.

It can be divided in two parts, 407219 and 34, that added together give a triangular number (407253 = T₉₀₂).

The spelling of 40721934 in words is "forty million, seven hundred twenty-one thousand, nine hundred thirty-four".