40931147421 has 16 divisors (see below), whose sum is σ = 60686051520. Its totient is φ = 27266140080.

The previous prime is 40931147371. The next prime is 40931147431. The reversal of 40931147421 is 12474113904.

40931147421 is a `hidden beast` number, since 4 + 0 + 93 + 1 + 147 + 421 = 666.

It is not a de Polignac number, because 40931147421 - 2¹¹ = 40931145373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40931147431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556150 + ... + 625431.

It is an arithmetic number, because the mean of its divisors is an integer number (3792878220).

Almost surely, 2^40931147421 is an apocalyptic number.

It is an amenable number.

40931147421 is a deficient number, since it is larger than the sum of its proper divisors (19754904099).

40931147421 is a wasteful number, since it uses less digits than its factorization.

40931147421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182873 (or 1182867 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 40931147421 in words is "forty billion, nine hundred thirty-one million, one hundred forty-seven thousand, four hundred twenty-one".