1400012790 has 64 divisors (see below), whose sum is σ = 3717176832. Its totient is φ = 334611200.

The previous prime is 1400012749. The next prime is 1400012807. The reversal of 1400012790 is 972100041.

It is a self number, because there is not a number n which added to its sum of digits gives 1400012790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6447 + ... + 53306.

It is an arithmetic number, because the mean of its divisors is an integer number (58080888).

Almost surely, 2^1400012790 is an apocalyptic number.

1400012790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400012790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858588416).

1400012790 is an abundant number, since it is smaller than the sum of its proper divisors (2317164042).

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

1400012790 is a wasteful number, since it uses less digits than its factorization.

1400012790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59845.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1400012790 is about 37416.7447809133. The cubic root of 1400012790 is about 1118.6923487452.

The spelling of 1400012790 in words is "one billion, four hundred million, twelve thousand, seven hundred ninety".