40137811 has 12 divisors (see below), whose sum is σ = 47832120. Its totient is φ = 33563040.

The previous prime is 40137803. The next prime is 40137821. The reversal of 40137811 is 11873104.

It is not a de Polignac number, because 40137811 - 2³ = 40137803 is a prime.

It is a super-2 number, since 2×40137811² = 3222087743743442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40137821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7981 + ... + 11998.

It is an arithmetic number, because the mean of its divisors is an integer number (3986010).

Almost surely, 2^40137811 is an apocalyptic number.

40137811 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40137811 is a deficient number, since it is larger than the sum of its proper divisors (7694309).

40137811 is a wasteful number, since it uses less digits than its factorization.

40137811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20034 (or 20027 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 40137811 is about 6335.4408686373. The cubic root of 40137811 is about 342.3874949714.

The spelling of 40137811 in words is "forty million, one hundred thirty-seven thousand, eight hundred eleven".