1234400413 has 4 divisors (see below), whose sum is σ = 1307012220. Its totient is φ = 1161788608.

The previous prime is 1234400353. The next prime is 1234400449. The reversal of 1234400413 is 3140044321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3140044321 = 38873 ⋅80777.

It can be written as a sum of positive squares in 2 ways, for example, as 606045924 + 628354489 = 24618^2 + 25067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234400413 is a prime.

It is a super-2 number, since 2×1234400413² = 3047488759229141138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234400473) 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, 36305878 + ... + 36305911.

It is an arithmetic number, because the mean of its divisors is an integer number (326753055).

Almost surely, 2^1234400413 is an apocalyptic number.

It is an amenable number.

1234400413 is a deficient number, since it is larger than the sum of its proper divisors (72611807).

1234400413 is an equidigital number, since it uses as much as digits as its factorization.

1234400413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72611806.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1234400413 is about 35134.0349661123. The cubic root of 1234400413 is about 1072.7174682674.

Adding to 1234400413 its reverse (3140044321), we get a palindrome (4374444734).

The spelling of 1234400413 in words is "one billion, two hundred thirty-four million, four hundred thousand, four hundred thirteen".