400400007070 has 32 divisors (see below), whose sum is σ = 823958993088. Its totient is φ = 137233506048.

The previous prime is 400400007067. The next prime is 400400007079. The reversal of 400400007070 is 70700004004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400400007079) 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, 760207 + ... + 1174186.

It is an arithmetic number, because the mean of its divisors is an integer number (25748718534).

Almost surely, 2^400400007070 is an apocalyptic number.

400400007070 is an abundant number, since it is smaller than the sum of its proper divisors (423558986018).

400400007070 is a wasteful number, since it uses less digits than its factorization.

400400007070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937364.

The product of its (nonzero) digits is 784, while the sum is 22.

The spelling of 400400007070 in words is "four hundred billion, four hundred million, seven thousand, seventy".