40498637 has 2 divisors, whose sum is σ = 40498638. Its totient is φ = 40498636.

The previous prime is 40498597. The next prime is 40498643. The reversal of 40498637 is 73689404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35772361 + 4726276 = 5981^2 + 2174^2 .

It is a cyclic number.

It is not a de Polignac number, because 40498637 - 2¹² = 40494541 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40498594 and 40498603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40498687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20249318 + 20249319.

It is an arithmetic number, because the mean of its divisors is an integer number (20249319).

Almost surely, 2^40498637 is an apocalyptic number.

It is an amenable number.

40498637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40498637 is an equidigital number, since it uses as much as digits as its factorization.

40498637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 40498637 is about 6363.8539423843. The cubic root of 40498637 is about 343.4104202647.

The spelling of 40498637 in words is "forty million, four hundred ninety-eight thousand, six hundred thirty-seven".