40972797 has 40 divisors (see below), whose sum is σ = 65436800. Its totient is φ = 25474176.

The previous prime is 40972787. The next prime is 40972807. The reversal of 40972797 is 79727904.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40972787) and next prime (40972807).

It is not a de Polignac number, because 40972797 - 2⁶ = 40972733 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 (40972777) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 121413 + ... + 121749.

It is an arithmetic number, because the mean of its divisors is an integer number (1635920).

Almost surely, 2^40972797 is an apocalyptic number.

It is an amenable number.

40972797 is a deficient number, since it is larger than the sum of its proper divisors (24464003).

40972797 is a wasteful number, since it uses less digits than its factorization.

40972797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 40972797 is about 6400.9996875488. Note that the first 3 decimals coincide. The cubic root of 40972797 is about 344.7454454962.

The spelling of 40972797 in words is "forty million, nine hundred seventy-two thousand, seven hundred ninety-seven".