1400377859 has 2 divisors, whose sum is σ = 1400377860. Its totient is φ = 1400377858.

The previous prime is 1400377763. The next prime is 1400377871. The reversal of 1400377859 is 9587730041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1400377859 - 2¹² = 1400373763 is a prime.

It is a super-2 number, since 2×1400377859² = 3922116295954847762, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1400377889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700188929 + 700188930.

It is an arithmetic number, because the mean of its divisors is an integer number (700188930).

Almost surely, 2^1400377859 is an apocalyptic number.

1400377859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400377859 is an equidigital number, since it uses as much as digits as its factorization.

1400377859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 1400377859 is about 37421.6228803616. The cubic root of 1400377859 is about 1118.7895774769.

The spelling of 1400377859 in words is "one billion, four hundred million, three hundred seventy-seven thousand, eight hundred fifty-nine".