40723901 has 2 divisors, whose sum is σ = 40723902. Its totient is φ = 40723900.

The previous prime is 40723877. The next prime is 40723909. The reversal of 40723901 is 10932704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33051001 + 7672900 = 5749^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 40723901 - 2¹⁴ = 40707517 is a prime.

It is a super-2 number, since 2×40723901² = 3316872225315602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40723909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20361950 + 20361951.

It is an arithmetic number, because the mean of its divisors is an integer number (20361951).

Almost surely, 2^40723901 is an apocalyptic number.

It is an amenable number.

40723901 is a deficient number, since it is larger than the sum of its proper divisors (1).

40723901 is an equidigital number, since it uses as much as digits as its factorization.

40723901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40723901 is about 6381.5281085333. The cubic root of 40723901 is about 344.0459562048.

The spelling of 40723901 in words is "forty million, seven hundred twenty-three thousand, nine hundred one".