40078903 has 8 divisors (see below), whose sum is σ = 41911776. Its totient is φ = 38253600.

The previous prime is 40078897. The next prime is 40078937. The reversal of 40078903 is 30987004.

It is a happy number.

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

It is not a de Polignac number, because 40078903 - 2²⁵ = 6524471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40078943) 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, 10833 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (5238972).

Almost surely, 2^40078903 is an apocalyptic number.

40078903 is a deficient number, since it is larger than the sum of its proper divisors (1832873).

40078903 is a wasteful number, since it uses less digits than its factorization.

40078903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40078903 is about 6330.7900770757. The cubic root of 40078903 is about 342.2199120261.

The spelling of 40078903 in words is "forty million, seventy-eight thousand, nine hundred three".