40997837 has 2 divisors, whose sum is σ = 40997838. Its totient is φ = 40997836.

The previous prime is 40997807. The next prime is 40997849. The reversal of 40997837 is 73879904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26512201 + 14485636 = 5149^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 40997837 - 2¹⁴ = 40981453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40997791 and 40997800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40997807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20498918 + 20498919.

It is an arithmetic number, because the mean of its divisors is an integer number (20498919).

Almost surely, 2^40997837 is an apocalyptic number.

It is an amenable number.

40997837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40997837 is an equidigital number, since it uses as much as digits as its factorization.

40997837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 40997837 is about 6402.9553332817. The cubic root of 40997837 is about 344.8156601155.

The spelling of 40997837 in words is "forty million, nine hundred ninety-seven thousand, eight hundred thirty-seven".