40463957 has 2 divisors, whose sum is σ = 40463958. Its totient is φ = 40463956.

The previous prime is 40463881. The next prime is 40463971. The reversal of 40463957 is 75936404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 7447441 = 5746^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 40463957 - 2¹⁸ = 40201813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40463957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40463257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20231978 + 20231979.

It is an arithmetic number, because the mean of its divisors is an integer number (20231979).

Almost surely, 2^40463957 is an apocalyptic number.

It is an amenable number.

40463957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40463957 is an equidigital number, since it uses as much as digits as its factorization.

40463957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 40463957 is about 6361.1285948328. The cubic root of 40463957 is about 343.3123686155.

The spelling of 40463957 in words is "forty million, four hundred sixty-three thousand, nine hundred fifty-seven".