1400999377 has 2 divisors, whose sum is σ = 1400999378. Its totient is φ = 1400999376.

The previous prime is 1400999363. The next prime is 1400999387. The reversal of 1400999377 is 7739990041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973502401 + 427496976 = 31201^2 + 20676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400999377 - 2¹¹ = 1400997329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400999377.

It is not a weakly prime, because it can be changed into another prime (1400999317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700499688 + 700499689.

It is an arithmetic number, because the mean of its divisors is an integer number (700499689).

Almost surely, 2^1400999377 is an apocalyptic number.

It is an amenable number.

1400999377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400999377 is an equidigital number, since it uses as much as digits as its factorization.

1400999377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 1400999377 is about 37429.9262222089. The cubic root of 1400999377 is about 1118.9550673389.

The spelling of 1400999377 in words is "one billion, four hundred million, nine hundred ninety-nine thousand, three hundred seventy-seven".