1401729461 has 6 divisors (see below), whose sum is σ = 1540744086. Its totient is φ = 1274299400.

The previous prime is 1401729451. The next prime is 1401729467. The reversal of 1401729461 is 1649271041.

It can be written as a sum of positive squares in only one way, i.e., 1375000561 + 26728900 = 37081^2 + 5170^2 .

It is not a de Polignac number, because 1401729461 - 2¹⁰ = 1401728437 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 (1401729467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5792150 + ... + 5792391.

It is an arithmetic number, because the mean of its divisors is an integer number (256790681).

Almost surely, 2^1401729461 is an apocalyptic number.

1401729461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1401729461 is a deficient number, since it is larger than the sum of its proper divisors (139014625).

1401729461 is a wasteful number, since it uses less digits than its factorization.

1401729461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11584563 (or 11584552 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1401729461 is about 37439.6776294882. The cubic root of 1401729461 is about 1119.1494022640.

The spelling of 1401729461 in words is "one billion, four hundred one million, seven hundred twenty-nine thousand, four hundred sixty-one".