1402440404 has 6 divisors (see below), whose sum is σ = 2454270714. Its totient is φ = 701220200.

The previous prime is 1402440397. The next prime is 1402440409. The reversal of 1402440404 is 4040442041.

It can be written as a sum of positive squares in only one way, i.e., 1376410000 + 26030404 = 37100^2 + 5102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1402440404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402440409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175305047 + ... + 175305054.

It is an arithmetic number, because the mean of its divisors is an integer number (409045119).

Almost surely, 2^1402440404 is an apocalyptic number.

It is an amenable number.

1402440404 is a deficient number, since it is larger than the sum of its proper divisors (1051830310).

1402440404 is a wasteful number, since it uses less digits than its factorization.

1402440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350610105 (or 350610103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1402440404 is about 37449.1709387538. The cubic root of 1402440404 is about 1119.3385773695.

Adding to 1402440404 its reverse (4040442041), we get a palindrome (5442882445).

The spelling of 1402440404 in words is "one billion, four hundred two million, four hundred forty thousand, four hundred four".