400421036 has 6 divisors (see below), whose sum is σ = 700736820. Its totient is φ = 200210516.

The previous prime is 400421003. The next prime is 400421069. The reversal of 400421036 is 630124004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400421003) and next prime (400421069).

It is a junction number, because it is equal to n+sod(n) for n = 400420999 and 400421017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50052626 + ... + 50052633.

It is an arithmetic number, because the mean of its divisors is an integer number (116789470).

Almost surely, 2^400421036 is an apocalyptic number.

It is an amenable number.

400421036 is a deficient number, since it is larger than the sum of its proper divisors (300315784).

400421036 is a wasteful number, since it uses less digits than its factorization.

400421036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100105263 (or 100105261 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400421036 is about 20010.5231315925. The cubic root of 400421036 is about 737.0647273908.

The spelling of 400421036 in words is "four hundred million, four hundred twenty-one thousand, thirty-six".