40722993 has 20 divisors (see below), whose sum is σ = 61105968. Its totient is φ = 27027000.

The previous prime is 40722991. The next prime is 40723003. The reversal of 40722993 is 39922704.

It is not a de Polignac number, because 40722993 - 2¹ = 40722991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40722991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19330 + ... + 21332.

Almost surely, 2^40722993 is an apocalyptic number.

It is an amenable number.

40722993 is a deficient number, since it is larger than the sum of its proper divisors (20382975).

40722993 is a wasteful number, since it uses less digits than its factorization.

40722993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2257 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40722993 is about 6381.4569653019. The cubic root of 40722993 is about 344.0433991802.

The spelling of 40722993 in words is "forty million, seven hundred twenty-two thousand, nine hundred ninety-three".