40694137 has 8 divisors (see below), whose sum is σ = 45122112. Its totient is φ = 36387600.

The previous prime is 40694131. The next prime is 40694161. The reversal of 40694137 is 73149604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40694137 - 2⁷ = 40694009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40694131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29653 + ... + 30994.

It is an arithmetic number, because the mean of its divisors is an integer number (5640264).

Almost surely, 2^40694137 is an apocalyptic number.

It is an amenable number.

40694137 is a deficient number, since it is larger than the sum of its proper divisors (4427975).

40694137 is a wasteful number, since it uses less digits than its factorization.

40694137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60719.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40694137 is about 6379.1956389501. The cubic root of 40694137 is about 343.9621178088.

The spelling of 40694137 in words is "forty million, six hundred ninety-four thousand, one hundred thirty-seven".