40621723 has 4 divisors (see below), whose sum is σ = 40848840. Its totient is φ = 40394608.

The previous prime is 40621717. The next prime is 40621729. The reversal of 40621723 is 32712604.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40621717) and next prime (40621729).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40621723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40621729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113290 + ... + 113647.

It is an arithmetic number, because the mean of its divisors is an integer number (10212210).

Almost surely, 2^40621723 is an apocalyptic number.

40621723 is a deficient number, since it is larger than the sum of its proper divisors (227117).

40621723 is a wasteful number, since it uses less digits than its factorization.

40621723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227116.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 40621723 is about 6373.5173177767. The cubic root of 40621723 is about 343.7579732365.

The spelling of 40621723 in words is "forty million, six hundred twenty-one thousand, seven hundred twenty-three".