400923601 has 24 divisors (see below), whose sum is σ = 451147704. Its totient is φ = 355829760.

The previous prime is 400923599. The next prime is 400923613. The reversal of 400923601 is 106329004.

It can be written as a sum of positive squares in 12 ways, for example, as 67897600 + 333026001 = 8240^2 + 18249^2 .

It is not a de Polignac number, because 400923601 - 2¹ = 400923599 is a prime.

It is a super-3 number, since 3×400923601³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400923671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 606211 + ... + 606871.

It is an arithmetic number, because the mean of its divisors is an integer number (18797821).

Almost surely, 2^400923601 is an apocalyptic number.

It is an amenable number.

400923601 is a deficient number, since it is larger than the sum of its proper divisors (50224103).

400923601 is a wasteful number, since it uses less digits than its factorization.

400923601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 400923601 is about 20023.0767116345. The cubic root of 400923601 is about 737.3729596746.

The spelling of 400923601 in words is "four hundred million, nine hundred twenty-three thousand, six hundred one".