40191038 has 8 divisors (see below), whose sum is σ = 60505032. Its totient is φ = 20022696.

The previous prime is 40191001. The next prime is 40191059. The reversal of 40191038 is 83019104.

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

It is a junction number, because it is equal to n+sod(n) for n = 40190998 and 40191016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35720 + ... + 36827.

It is an arithmetic number, because the mean of its divisors is an integer number (7563129).

Almost surely, 2^40191038 is an apocalyptic number.

40191038 is a deficient number, since it is larger than the sum of its proper divisors (20313994).

40191038 is a wasteful number, since it uses less digits than its factorization.

40191038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72826.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 40191038 is about 6339.6402106113. The cubic root of 40191038 is about 342.5387755130.

The spelling of 40191038 in words is "forty million, one hundred ninety-one thousand, thirty-eight".