1408690000 has 50 divisors (see below), whose sum is σ = 3410603570. Its totient is φ = 563472000.

The previous prime is 1408689977. The next prime is 1408690009. The reversal of 1408690000 is 968041.

It can be written as a sum of positive squares in 5 ways, for example, as 269222464 + 1139467536 = 16408^2 + 33756^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×1408690000² = 3968815032200000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408690009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 60435 + ... + 80434.

Almost surely, 2^1408690000 is an apocalyptic number.

1408690000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1408690000 is an abundant number, since it is smaller than the sum of its proper divisors (2001913570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1408690000 is an equidigital number, since it uses as much as digits as its factorization.

1408690000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140897 (or 140876 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1408690000 is about 37532.5192333262. The cubic root of 1408690000 is about 1120.9987901597.

The spelling of 1408690000 in words is "one billion, four hundred eight million, six hundred ninety thousand".