40319690 has 16 divisors (see below), whose sum is σ = 75731328. Its totient is φ = 15426576.

The previous prime is 40319689. The next prime is 40319707. The reversal of 40319690 is 9691304.

It is a super-2 number, since 2×40319690² = 3251354803392200, which contains 22 as substring.

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, 87422 + ... + 87881.

It is an arithmetic number, because the mean of its divisors is an integer number (4733208).

Almost surely, 2^40319690 is an apocalyptic number.

40319690 is a deficient number, since it is larger than the sum of its proper divisors (35411638).

40319690 is a wasteful number, since it uses less digits than its factorization.

40319690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175333.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 40319690 is about 6349.7787363025. The cubic root of 40319690 is about 342.9038764835.

The spelling of 40319690 in words is "forty million, three hundred nineteen thousand, six hundred ninety".