400352101 has 2 divisors, whose sum is σ = 400352102. Its totient is φ = 400352100.

The previous prime is 400352093. The next prime is 400352131. The reversal of 400352101 is 101253004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381420900 + 18931201 = 19530^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 400352101 - 2³ = 400352093 is a prime.

It is a super-2 number, since 2×400352101² = 320563609550228402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400352131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200176050 + 200176051.

It is an arithmetic number, because the mean of its divisors is an integer number (200176051).

Almost surely, 2^400352101 is an apocalyptic number.

It is an amenable number.

400352101 is a deficient number, since it is larger than the sum of its proper divisors (1).

400352101 is an equidigital number, since it uses as much as digits as its factorization.

400352101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 400352101 is about 20008.8005887409. The cubic root of 400352101 is about 737.0224281871.

The spelling of 400352101 in words is "four hundred million, three hundred fifty-two thousand, one hundred one".