1400024069 has 4 divisors (see below), whose sum is σ = 1482378444. Its totient is φ = 1317669696.

The previous prime is 1400024047. The next prime is 1400024083. The reversal of 1400024069 is 9604200041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 564062500 + 835961569 = 23750^2 + 28913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400024069 - 2⁸ = 1400023813 is a prime.

It is a super-2 number, since 2×1400024069² = 3920134787558633522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400024569) 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, 41177162 + ... + 41177195.

It is an arithmetic number, because the mean of its divisors is an integer number (370594611).

Almost surely, 2^1400024069 is an apocalyptic number.

It is an amenable number.

1400024069 is a deficient number, since it is larger than the sum of its proper divisors (82354375).

1400024069 is an equidigital number, since it uses as much as digits as its factorization.

1400024069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82354374.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1400024069 is about 37416.8955018986. The cubic root of 1400024069 is about 1118.6953529314.

The spelling of 1400024069 in words is "one billion, four hundred million, twenty-four thousand, sixty-nine".