40997761 has 32 divisors (see below), whose sum is σ = 51840000. Its totient is φ = 32288256.

The previous prime is 40997689. The next prime is 40997777. The reversal of 40997761 is 16779904.

It is a happy number.

It is not a de Polignac number, because 40997761 - 2¹³ = 40989569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40997161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460605 + ... + 460693.

It is an arithmetic number, because the mean of its divisors is an integer number (1620000).

Almost surely, 2^40997761 is an apocalyptic number.

It is an amenable number.

40997761 is a deficient number, since it is larger than the sum of its proper divisors (10842239).

40997761 is an equidigital number, since it uses as much as digits as its factorization.

40997761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 40997761 is about 6402.9493985194. The cubic root of 40997761 is about 344.8154470473.

The spelling of 40997761 in words is "forty million, nine hundred ninety-seven thousand, seven hundred sixty-one".