40991027 has 16 divisors (see below), whose sum is σ = 51321600. Its totient is φ = 31806240.

The previous prime is 40991009. The next prime is 40991047. The reversal of 40991027 is 72019904.

It is a cyclic number.

It is not a de Polignac number, because 40991027 - 2¹⁶ = 40925491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40990984 and 40991002.

It is not an unprimeable number, because it can be changed into a prime (40991047) 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, 19724 + ... + 21702.

It is an arithmetic number, because the mean of its divisors is an integer number (3207600).

Almost surely, 2^40991027 is an apocalyptic number.

40991027 is a deficient number, since it is larger than the sum of its proper divisors (10330573).

40991027 is a wasteful number, since it uses less digits than its factorization.

40991027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 40991027 is about 6402.4235255097. The cubic root of 40991027 is about 344.7965670377.

The spelling of 40991027 in words is "forty million, nine hundred ninety-one thousand, twenty-seven".