40193451 has 12 divisors (see below), whose sum is σ = 59153328. Its totient is φ = 26289744.

The previous prime is 40193431. The next prime is 40193477. The reversal of 40193451 is 15439104.

It is not a de Polignac number, because 40193451 - 2⁹ = 40192939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40193401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41655 + ... + 42608.

It is an arithmetic number, because the mean of its divisors is an integer number (4929444).

Almost surely, 2^40193451 is an apocalyptic number.

40193451 is a deficient number, since it is larger than the sum of its proper divisors (18959877).

40193451 is a wasteful number, since it uses less digits than its factorization.

40193451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84322 (or 84319 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40193451 is about 6339.8305182394. The cubic root of 40193451 is about 342.5456305198.

The spelling of 40193451 in words is "forty million, one hundred ninety-three thousand, four hundred fifty-one".