36401389 has 2 divisors, whose sum is σ = 36401390. Its totient is φ = 36401388.

The previous prime is 36401371. The next prime is 36401411. The reversal of 36401389 is 98310463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29615364 + 6786025 = 5442^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 36401389 - 2¹⁵ = 36368621 is a prime.

It is a super-2 number, since 2×36401389² = 2650122242258642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36401329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18200694 + 18200695.

It is an arithmetic number, because the mean of its divisors is an integer number (18200695).

Almost surely, 2^36401389 is an apocalyptic number.

It is an amenable number.

36401389 is a deficient number, since it is larger than the sum of its proper divisors (1).

36401389 is an equidigital number, since it uses as much as digits as its factorization.

36401389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 36401389 is about 6033.3563627553. The cubic root of 36401389 is about 331.4153746922.

The spelling of 36401389 in words is "thirty-six million, four hundred one thousand, three hundred eighty-nine".