1401111377 has 2 divisors, whose sum is σ = 1401111378. Its totient is φ = 1401111376.

The previous prime is 1401111353. The next prime is 1401111403. The reversal of 1401111377 is 7731111041.

It is an a-pointer prime, because the next prime (1401111403) can be obtained adding 1401111377 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 926045761 + 475065616 = 30431^2 + 21796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401111377 - 2⁸ = 1401111121 is a prime.

It is a super-2 number, since 2×1401111377² = 3926226181517672258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1401111317) 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 as a sum of consecutive naturals, namely, 700555688 + 700555689.

It is an arithmetic number, because the mean of its divisors is an integer number (700555689).

Almost surely, 2^1401111377 is an apocalyptic number.

It is an amenable number.

1401111377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401111377 is an equidigital number, since it uses as much as digits as its factorization.

1401111377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 1401111377 is about 37431.4223213599. The cubic root of 1401111377 is about 1118.9848840612.

The spelling of 1401111377 in words is "one billion, four hundred one million, one hundred eleven thousand, three hundred seventy-seven".