40620401 has 4 divisors (see below), whose sum is σ = 41076900. Its totient is φ = 40163904.

The previous prime is 40620389. The next prime is 40620407. The reversal of 40620401 is 10402604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27667600 + 12952801 = 5260^2 + 3599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40620401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40620401.

It is not an unprimeable number, because it can be changed into a prime (40620407) 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, 228116 + ... + 228293.

It is an arithmetic number, because the mean of its divisors is an integer number (10269225).

Almost surely, 2^40620401 is an apocalyptic number.

It is an amenable number.

40620401 is a deficient number, since it is larger than the sum of its proper divisors (456499).

40620401 is an equidigital number, since it uses as much as digits as its factorization.

40620401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456498.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40620401 is about 6373.4136065377. The cubic root of 40620401 is about 343.7542440909.

The spelling of 40620401 in words is "forty million, six hundred twenty thousand, four hundred one".