400700407 has 4 divisors (see below), whose sum is σ = 400904056. Its totient is φ = 400496760.

The previous prime is 400700383. The next prime is 400700429. The reversal of 400700407 is 704007004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400700407 - 2²⁷ = 266482679 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 (400700467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98844 + ... + 102817.

It is an arithmetic number, because the mean of its divisors is an integer number (100226014).

Almost surely, 2^400700407 is an apocalyptic number.

400700407 is a deficient number, since it is larger than the sum of its proper divisors (203649).

400700407 is a wasteful number, since it uses less digits than its factorization.

400700407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203648.

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

The square root of 400700407 is about 20017.5025165479. The cubic root of 400700407 is about 737.2361025365.

The spelling of 400700407 in words is "four hundred million, seven hundred thousand, four hundred seven".