404240626 has 4 divisors (see below), whose sum is σ = 606360942. Its totient is φ = 202120312.

The previous prime is 404240621. The next prime is 404240633. The reversal of 404240626 is 626042404.

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

It can be written as a sum of positive squares in only one way, i.e., 223472601 + 180768025 = 14949^2 + 13445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404240594 and 404240603.

It is not an unprimeable number, because it can be changed into a prime (404240621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060155 + ... + 101060158.

Almost surely, 2^404240626 is an apocalyptic number.

404240626 is a deficient number, since it is larger than the sum of its proper divisors (202120316).

404240626 is a wasteful number, since it uses less digits than its factorization.

404240626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202120315.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 404240626 is about 20105.7361466821. The cubic root of 404240626 is about 739.4009188343.

The spelling of 404240626 in words is "four hundred four million, two hundred forty thousand, six hundred twenty-six".