400069973 has 8 divisors (see below), whose sum is σ = 419976960. Its totient is φ = 380600640.

The previous prime is 400069961. The next prime is 400069991. The reversal of 400069973 is 379960004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400069973 - 2⁸ = 400069717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400065973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107540 + ... + 111197.

It is an arithmetic number, because the mean of its divisors is an integer number (52497120).

Almost surely, 2^400069973 is an apocalyptic number.

It is an amenable number.

400069973 is a deficient number, since it is larger than the sum of its proper divisors (19906987).

400069973 is a wasteful number, since it uses less digits than its factorization.

400069973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218827.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 400069973 is about 20001.7492485032. The cubic root of 400069973 is about 736.8492610124.

The spelling of 400069973 in words is "four hundred million, sixty-nine thousand, nine hundred seventy-three".