400704541 has 2 divisors, whose sum is σ = 400704542. Its totient is φ = 400704540.

The previous prime is 400704533. The next prime is 400704589. The reversal of 400704541 is 145407004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230402041 + 170302500 = 15179^2 + 13050^2 .

It is a cyclic number.

It is not a de Polignac number, because 400704541 - 2³ = 400704533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400701541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200352270 + 200352271.

It is an arithmetic number, because the mean of its divisors is an integer number (200352271).

Almost surely, 2^400704541 is an apocalyptic number.

It is an amenable number.

400704541 is a deficient number, since it is larger than the sum of its proper divisors (1).

400704541 is an equidigital number, since it uses as much as digits as its factorization.

400704541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 400704541 is about 20017.6057759164. The cubic root of 400704541 is about 737.2386378667.

The spelling of 400704541 in words is "four hundred million, seven hundred four thousand, five hundred forty-one".