1406191040 has 56 divisors (see below), whose sum is σ = 3545476272. Its totient is φ = 529387520.

The previous prime is 1406191037. The next prime is 1406191049. The reversal of 1406191040 is 401916041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406191049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123806 + ... + 134685.

Almost surely, 2^1406191040 is an apocalyptic number.

1406191040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406191040 is an abundant number, since it is smaller than the sum of its proper divisors (2139285232).

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

1406191040 is a wasteful number, since it uses less digits than its factorization.

1406191040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258525 (or 258515 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1406191040 is about 37499.2138584264. The cubic root of 1406191040 is about 1120.3355287242.

The spelling of 1406191040 in words is "one billion, four hundred six million, one hundred ninety-one thousand, forty".