40972851 has 16 divisors (see below), whose sum is σ = 62113920. Its totient is φ = 26679240.

The previous prime is 40972849. The next prime is 40972859. The reversal of 40972851 is 15827904.

It is not a de Polignac number, because 40972851 - 2¹ = 40972849 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40972859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16485 + ... + 18806.

It is an arithmetic number, because the mean of its divisors is an integer number (3882120).

Almost surely, 2^40972851 is an apocalyptic number.

40972851 is a deficient number, since it is larger than the sum of its proper divisors (21141069).

40972851 is a wasteful number, since it uses less digits than its factorization.

40972851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35343 (or 35337 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40972851 is about 6401.0039056386. The cubic root of 40972851 is about 344.7455969483.

The spelling of 40972851 in words is "forty million, nine hundred seventy-two thousand, eight hundred fifty-one".