10399401 has 16 divisors (see below), whose sum is σ = 15472320. Its totient is φ = 6903360.

The previous prime is 10399387. The next prime is 10399409. The reversal of 10399401 is 10499301.

It is not a de Polignac number, because 10399401 - 2⁵ = 10399369 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10399409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6961 + ... + 8321.

It is an arithmetic number, because the mean of its divisors is an integer number (967020).

Almost surely, 2^10399401 is an apocalyptic number.

It is an amenable number.

10399401 is a deficient number, since it is larger than the sum of its proper divisors (5072919).

10399401 is a wasteful number, since it uses less digits than its factorization.

10399401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 10399401 is about 3224.8102269746. The cubic root of 10399401 is about 218.2743858629.

It can be divided in two parts, 1039 and 9401, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 10399401 in words is "ten million, three hundred ninety-nine thousand, four hundred one".