40945972 has 6 divisors (see below), whose sum is σ = 71655458. Its totient is φ = 20472984.

The previous prime is 40945903. The next prime is 40945973. The reversal of 40945972 is 27954904.

It can be written as a sum of positive squares in only one way, i.e., 40627876 + 318096 = 6374^2 + 564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40945973) 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 as a sum of consecutive naturals, namely, 5118243 + ... + 5118250.

Almost surely, 2^40945972 is an apocalyptic number.

It is an amenable number.

40945972 is a deficient number, since it is larger than the sum of its proper divisors (30709486).

40945972 is a wasteful number, since it uses less digits than its factorization.

40945972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10236497 (or 10236495 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 40945972 is about 6398.9039686496. The cubic root of 40945972 is about 344.6701938157.

The spelling of 40945972 in words is "forty million, nine hundred forty-five thousand, nine hundred seventy-two".