1400012749 has 2 divisors, whose sum is σ = 1400012750. Its totient is φ = 1400012748.

The previous prime is 1400012743. The next prime is 1400012807. The reversal of 1400012749 is 9472100041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1380494025 + 19518724 = 37155^2 + 4418^2 .

It is an emirp because it is prime and its reverse (9472100041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1400012749 - 2¹⁵ = 1399979981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400012743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700006374 + 700006375.

It is an arithmetic number, because the mean of its divisors is an integer number (700006375).

Almost surely, 2^1400012749 is an apocalyptic number.

It is an amenable number.

1400012749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400012749 is an equidigital number, since it uses as much as digits as its factorization.

1400012749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1400012749 is about 37416.7442330302. The cubic root of 1400012749 is about 1118.6923378247.

The spelling of 1400012749 in words is "one billion, four hundred million, twelve thousand, seven hundred forty-nine".