400789030 has 32 divisors (see below), whose sum is σ = 754411968. Its totient is φ = 153014400.

The previous prime is 400788977. The next prime is 400789031. The reversal of 400789030 is 30987004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400788983 and 400789001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400789031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122820 + ... + 126040.

It is an arithmetic number, because the mean of its divisors is an integer number (23575374).

Almost surely, 2^400789030 is an apocalyptic number.

400789030 is a deficient number, since it is larger than the sum of its proper divisors (353622938).

400789030 is a wasteful number, since it uses less digits than its factorization.

400789030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 400789030 is about 20019.7160319521. The cubic root of 400789030 is about 737.2904500887.

The spelling of 400789030 in words is "four hundred million, seven hundred eighty-nine thousand, thirty".