1400087629 has 4 divisors (see below), whose sum is σ = 1400293084. Its totient is φ = 1399882176.

The previous prime is 1400087609. The next prime is 1400087687. The reversal of 1400087629 is 9267800041.

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 998686404 + 401401225 = 31602^2 + 20035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400087629 - 2⁵ = 1400087597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400087609) 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, 92142 + ... + 106255.

It is an arithmetic number, because the mean of its divisors is an integer number (350073271).

Almost surely, 2^1400087629 is an apocalyptic number.

It is an amenable number.

1400087629 is a deficient number, since it is larger than the sum of its proper divisors (205455).

1400087629 is an equidigital number, since it uses as much as digits as its factorization.

1400087629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205454.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1400087629 is about 37417.7448411846. The cubic root of 1400087629 is about 1118.7122819738.

The spelling of 1400087629 in words is "one billion, four hundred million, eighty-seven thousand, six hundred twenty-nine".