40069688 has 8 divisors (see below), whose sum is σ = 75130680. Its totient is φ = 20034840.

The previous prime is 40069621. The next prime is 40069691. The reversal of 40069688 is 88696004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2504348 + ... + 2504363.

It is an arithmetic number, because the mean of its divisors is an integer number (9391335).

Almost surely, 2^40069688 is an apocalyptic number.

It is an amenable number.

40069688 is a deficient number, since it is larger than the sum of its proper divisors (35060992).

40069688 is a wasteful number, since it uses less digits than its factorization.

40069688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008717 (or 5008713 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 40069688 is about 6330.0622429799. The cubic root of 40069688 is about 342.1936821148.

The spelling of 40069688 in words is "forty million, sixty-nine thousand, six hundred eighty-eight".