400702 has 4 divisors (see below), whose sum is σ = 601056. Its totient is φ = 200350.

The previous prime is 400681. The next prime is 400703. The reversal of 400702 is 207004.

400702 is nontrivially palindromic in base 15.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100174 + ... + 100177.

It is an arithmetic number, because the mean of its divisors is an integer number (150264).

2⁴⁰⁰⁷⁰² is an apocalyptic number.

400702 is a deficient number, since it is larger than the sum of its proper divisors (200354).

400702 is a wasteful number, since it uses less digits than its factorization.

400702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200353.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 400702 is about 633.0102684791. The cubic root of 400702 is about 73.7237079505.

Subtracting from 400702 its sum of digits (13), we obtain a square (400689 = 633²).

Adding to 400702 its reverse (207004), we get a palindrome (607706).

The spelling of 400702 in words is "four hundred thousand, seven hundred two", and thus it is an iban number.