1400377769 has 4 divisors (see below), whose sum is σ = 1600431744. Its totient is φ = 1200323796.

The previous prime is 1400377763. The next prime is 1400377859. The reversal of 1400377769 is 9677730041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1400377769 is a prime.

It is a super-2 number, since 2×1400377769² = 3922115791818834722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1400377763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100026977 + ... + 100026990.

It is an arithmetic number, because the mean of its divisors is an integer number (400107936).

Almost surely, 2^1400377769 is an apocalyptic number.

It is an amenable number.

1400377769 is a deficient number, since it is larger than the sum of its proper divisors (200053975).

1400377769 is an equidigital number, since it uses as much as digits as its factorization.

1400377769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200053974.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 1400377769 is about 37421.6216778482. The cubic root of 1400377769 is about 1118.7895535093.

The spelling of 1400377769 in words is "one billion, four hundred million, three hundred seventy-seven thousand, seven hundred sixty-nine".