40356994 has 8 divisors (see below), whose sum is σ = 60761340. Its totient is φ = 20103216.

The previous prime is 40356991. The next prime is 40357013. The reversal of 40356994 is 49965304.

It can be written as a sum of positive squares in 2 ways, for example, as 40259025 + 97969 = 6345^2 + 313^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40356991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36969 + ... + 38044.

Almost surely, 2^40356994 is an apocalyptic number.

40356994 is a deficient number, since it is larger than the sum of its proper divisors (20404346).

40356994 is a wasteful number, since it uses less digits than its factorization.

40356994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75284.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 40356994 is about 6352.7154823744. The cubic root of 40356994 is about 343.0095960732.

The spelling of 40356994 in words is "forty million, three hundred fifty-six thousand, nine hundred ninety-four".